American National Standard

for Information Technology

Geographic Information Framework

Data Content Standard

(Part NNN)

Governmental Unit Boundary Data Exchange Standard

Secretariat

INFORMATION TECHNOLOGY INDUSTRY COUNCIL

Approved

MONTH/YEAR

Draft

September/2003

**American National Standards Institute**

**Contents Page**

**Forward** ii

**1 Scope** 1

**2 Normative references** 1

**3 Definitions and abbreviations** 2

3.1 Definitions 2

3.2 Abbreviations 4

**4 Standards development** 4

**5 Overview of governmental unit and legal entity boundary data**

**content** 4

5.1 References 4

5.2 Type information 5

5.3 Instance Information 5

**6 Governmental unit and other legal entity identification and
relationship information** 5

6.1 Information 5

6.2 Identification 5

6.3 Relationships 5

**7 Data content of governmental unit and other legal entity
boundaries** 7

7.1 Description of a governmental unit 7

7.2 Governmental unit and other legal entity boundary dataset element
characteristics 7

**8 Governmental unity boundary file metadata requirement** 8

**9 Maintenance authority** 9

**Annexes**

Annex A (normative) Governmental unit boundary UML model 11

Annex B (normative) Governmental unit boundary UML object description 13

Annex C (normative) Governmental unit and other legal entity definitions
17

Annex D (informative) Governmental unity boundary encoding example 21

Annex E (informative) Use of standard with other entities 29

Annex F (informative) Governmental unit boundary file metadata

requirement 31

Annex G (informative) Diagram of governmental unit boundary description
component characteristics 45

Annex H (informative) Table of governmental unit boundary description
component characteristics 51

Annex I (informative) Referenced publications 57

Annex J (informative) UML Notations 59

*Annex K (informative) Governmental unit boundary GML encoding example*

**Forward** (This is not part of American National Standard
\[designation\])

The primary purpose of this standard is to support the exchange of
governmental unit and other legal entity boundary data. This standard
seeks to establish a common content of governmental unit and other legal
entity boundary datasets. It seeks to decrease the costs of acquiring
and exchanging governmental unit and other legal entity boundary data
for Federal, Tribal, State and local users and creators through a common
means of describing the data content. Other benefits of adopting this
standard include facilitation in maintenance of governmental unit
boundaries.

This standard has been developed to fulfill one of the objectives of the
National Spatial Data Infrastructure (NSDI), i.e., to create common
geographic base data for seven critical data themes. These core themes
are considered framework data, of critical importance to the geographic
information infrastructure. The Geospatial One-Stop initiative, a
Federal e-government initiative, is designed, in part, to expedite the
creation of the seven framework layers.

This standard is being developed by L1, Geographic Information,
subcommittee of the InterNational Committee for Information Technology
Standards (INCITS) under the auspices of the American National Standards
Institute (ANSI). INCITS L1 standards are drafted in accordance with the
rules given in the *ANSI Style Manual* for preparation of proposed
American National Standards.

This standard contains eleven annexes, three of which are normative,
eight of which are informative.

**Committee**

######## 1 Scope

The purpose of the Geographic Information Framework Data Content
Standards-Governmental Unit Boundary Exchange Standard is to establish
the content requirements for the collection and interchange of
governmental unit (GU) and other legal entity boundary data and to
facilitate the maintenance and use of that information.

This standard identifies and defines terminology, encoding scheme, and
the data components required for describing the governmental unit or
other legal entity and its boundary, along with the metadata needed for
boundary data exchange. This standard is applicable to all generally
recognized governmental units and other legal entities,
organization-recognized governmental units, and other geographic areas.

For the purposes of this standard, a governmental unit is defined as
follows:

> A legally bounded geographic entity that has the authority of a
> government. A legal government is one established under Federal,
> Tribal, State or local law with the authority to elect or appoint
> officials and raise revenues through taxes.[^1]

In addition, this standard accommodates other legal entities and adopts
the ANSI X3.31 (FIPS Publication 55-3) description for such entities.
This standard defines a legal entity as follows:

> A geographic unit with legally defined boundaries established under
> Federal, State, Tribal, or local law as a governmental unit or as an
> area for the administration of a governmental function.

This standard also applies to entities that are statistically equivalent
to a legal entity for data reporting purposes, e.g., incorporated places
that are independent of counties and serve as equivalent to a county.
Governmental units and other legal entities recognized by this standard
are defined in Annex C (normative). Principles described in this
standard may be extended to other geographic entities to facilitate the
exchange of boundary data, such as those listed in Annex E
(informative).

This standard specifies the content and its organization necessary for
the successful interchange of governmental unit or other legal entity
boundary data. This standard does not specify a particular structure for
interchange of boundary data. Further, data producers and users may
structure governmental unit or other legal entity boundary data in any
format for their internal use.

**2 Normative references**

The following standards contain provisions which, through reference in
this text, constitute provisions of this American National Standard. At
the time of publication, the editions indicated were valid. All
standards are subject to revision and parties to agreements based on
this American National Standard are encouraged to investigate the
possibility of applying the most recent editions of the standards
indicated below.

ANSI X3.31-1988, *Information Systems-Codes-Structure for the
Identification of the Counties and County Equivalents for the United
States and its Outlying and Associated Areas for Information
Interchange*

ANSI X3.47-1988, *Information Systems-Codes-Structure and Data
Requirements for the Identification of Named Populated Places, Primary
County Divisions, and Other Locational Entities of the United States and
Its Outlying and Associated Areas for Information Interchange*

ANSI NCITS 320-1998, *Information Technology-Spatial Data Transfer*

FGDC-STD-003-1999 *Cadastral Data Content Standard for the National
Spatial Data Infrastructure*

FGDC-STD-001-1998 *Content Standard for Digital Geospatial Metadata
(Version 2.0)*

FIPS 55-3 *Codes for Named Populated Places, primary County Divisions,
and Other Locational Entities of the United States, Puerto Rico, and the
Outlying Areas*

FIPS 6-4 *Counties and Equivalent Entities of the United States, Its
Possessions, and Associated Areas*

ISO 19107 *Geographic Information - Spatial Schema (DIS)*

ISO 19109 *Geographic Information-Rules for Application Schema (DIS)*

ISO 19112 *Geographic Information-Spatial Referencing by Geographic
Identifiers (DIS)*

**3 Definitions and abbreviations**

**3.1 Definitions**

3.1.1 areal -- a term specifying that an object is two-dimensional

3.1.2 boundary -- set that represents the limit of an entity (e.g., the
line that marks the limit of a geographic entity)

NOTE: A boundary may or may not follow a visible feature and may or may
not be visibly marked.

3.1.3 bounded -- entity with one or more connected boundaries

NOTE: In ISO 19107 bounded is \"contained within a continuous delimiting
line or an ordered set of line segments\".

Applicable at the type or instance level

3.1.4 coextensive with -- one-to-one relationship between two or more
geographic entities or features

NOTE: Applicable at the instance level

3.1.5 coincident -- a portion or portions of an entity that shares the
same location with one or more entities

3.1.6 composed of -- entity contains subentities that are contained
completely within the entity and are the extent of the entity

NOTE: Applicable at the type or instance level

3.1.7 composes -- subentities are completely contained within an entity

NOTE: Composes assumes a geographic entity is contained entirely within,
or encompassed by, another.

Applicable at the type or instance level

3.1.8 contains nested -- entity contains subentities that are contained
completely within the entity

NOTE: A nesting relationship implies one geographic entity must be
totally within another.

Applicable at the instance level

EXAMPLE: State of Delaware contains nested three counties.

3.1.9 contains only nested -- entity contains subentities that are
contained completely within the entity and are the extent of the entity

EXAMPLE: State of Delaware contains only nested three counties.

3.1.10 contiguous -- entities share a common point or portion of a
boundary

3.1.11 functional status -- the administrative or legal activities
associated with performing the legally prescribed functions of a
governmental unit or legal entity; the administrative or legal entity is
either functioning or non-functioning, is either active or inactive

3.1.12 governmental unit -- a legally bounded geographic entity that has
the authority of a government

NOTE: A legal government is one established under Federal, Tribal, State
or local law with the authority to elect or appoint officials and raise
revenues through taxes.

> EXAMPLES: Examples of legal governments include: the United States,
> State of Iowa, Uinta County, Chester township, and Phillipsburg city.

3.1.13 government unit boundary description component -- element for
identifying and storing discrete units of information on governmental
unit boundaries

3.1.14 instance -- single representation of a feature type

EXAMPLE: Corporate boundary of Augusta, Georgia

3.1.15 legal area -- a geographic area whose boundaries, name, origin,
and legal/statistical area description result from charters, laws,
treaties, or other administrative or governmental action

NOTE: The term legal area encompasses both governmental units and legal
entities, and refers to both for descriptive purposes

3.1.16 legal entity -- a geographic unit with legally defined boundaries
established under Federal, State, Tribal, or local law as a governmental
unit or as an area for the administration of a governmental function

EXAMPLES: Examples of legally bounded administrative areas (legal
entities) include: congressional districts and state legislative
districts, voting precincts, city wards, refuse collection zones, school
attendance areas.

3.1.17 maintenance relationship -- common areal information that must be
maintained between one or more geographic entities or features

NOTE: Applicable at the type and instance level

3.1.18 nests within -- one or more subentities are contained completely
within an entity

> NOTE: Applicable at the instance level
>
> EXAMPLE: Counties nest within States.

3.1.19 non-bounded -- entity lacking one or more connected boundaries

> NOTE: Non-bounded is the absence of being bounded.
>
> Applicable at the type or instance level

3.1.20 topological relationship -- spatial condition or characteristic
required for creating and maintaining the internal topology of a
database (or file)

3.1.21 type -- representation of a class of real world occurrences with
common characteristics

**3.2 Abbreviations**

3.2.1 ANSI -- American National Standards Institute

3.2.2 DIS -- Draft International Standard

3.2.3 FIPS PUB -- Federal Information Processing Standards Publication

3.2.4 FGDC -- Federal Geographic Data Committee

3.2.5 GU -- governmental unit

3.2.6 INCITS -- InterNational Committee for Information Technology
Standards

3.2.7 NCITS -- National Committee for Information Technology Standards

3.2.8 SDTS -- *Spatial Data Transfer Standard* (FIPS-PUB-173-1992)

**4 Standards development**

The FGDC Subcommittee on Cultural and Demographic Data, sponsor of the
Geographic Information Framework Data Content Standards-Governmental
Unit Boundary Exchange Standard, initiated the development of the
Governmental Unit Boundary Data Content Standard pursuant to the Office
of Management and Budget (OMB) Circular A-16 that specifies governmental
unit boundaries as one of the seven data themes that constitute the
National Spatial Data Infrastructure (NSDI). Development commenced with
the submittal of the \"Proposal for a National Spatial Data
Infrastructures Project\" to the FGDC Standards Working Group in
November 1997. The proposal was accepted by the FGDC, and completed
Public Review in April 1998 with favorable comments. The first version
of the working draft was completed in February 1999. In August 2002, the
FGDC determined that the development of the suite of seven data theme
standards of the NSDI would continue under the auspices of INCITS L1.
Thus, the review and affirmation of the Governmental Unit Boundary
Exchange Standard will be through ANSI process.

**5 Overview of governmental unit and other legal entity boundary data
content**

The purpose of this standard is to establish the content requirements
for the collection and interchange of governmental unit and other legal
entity boundary data. To fully describe the governmental unit or other
legal entity boundary information, one must include references,
governmental unit type information, governmental unit instance
information, and governmental unit boundary instance coordinate
information.

**5.1 References**

When describing governmental unit or other legal entity boundaries, the
dataset must be documented by FGDC-compliant metadata in accordance with
FGDC-STD-001-1998 *Content Standards for Digital Geospatial Metadata
(Version 2.0).* Annexes to this National Standard describe the necessary
reference documentation. This reference metadata requires, for example,
citation, project parameters, and data quality. In addition, one can
record other documents referenced in documenting the boundary.

**5.2 Type information**

GU type information describes the general category, or type, of GU or
other legal entity being documented, e.g., county. This section of
governmental unit or other legal entity documentation includes GU type
name, GU definition, coding system, if any, and relationship information
to other GU type entities.

**5.3 Instance information**

GU instance relays specific information and coordinate data about the
individual GU being described. This includes the instance name, instance
relationships, and coordinates.

**6 Governmental unit and other legal entity identification and
relationship information**

The exchange of governmental unit boundary information requires that
each governmental unit be unambiguously identified and that the
relationship of that governmental unit to other governmental units be
clearly indicated.

**6.1 Information**

Information about governmental units and other legal entities is
presented at two levels: the type level (pertaining to categories of
governmental units or other legal entities), and the instance level
(pertaining to single occurrences of a governmental unit or other legal
entity).

**6.2 Identification**

Identification information is essential for describing governmental unit
and other legal entity boundaries. Identification information is
applicable at both the type level and the Instance level. Examples of
identification information at the type level are type name and type
definition. Examples of identification information at the instance level
are instance name and legal area description.

**6.3 Relationships**

Equally important for describing governmental units and other legal
entities is knowledge of their relationships to other entities.
Relationships between governmental units are topologic relationships and
maintenance relationships.

**6.3.1 Topologic relationships**

Topologic relationships describe how a governmental unit relates to its
neighbors, or how it fits within a hierarchy. Topologic relationships
identified in this standard are contiguous, composed of, composes.
Topologic relationships are applicable at the type level and instance
level. They may include relationships required for the internal topology
of a database.

**6.3.2 Maintenance relationships**

Maintenance relationships, if they exist for governmental units or other
legal entities, provide the dependencies of common areal information
between one or more governmental units or other legal entity boundaries
and geographic area features of which they consist. Maintenance
relationships are applicable at the type level and instance level.
Maintenance relationships describe the dependencies between one
governmental unit and another. This standard recognizes four maintenance
relationships: coextensive with, contains nested, nests within, and
contains only nested. An example of a maintenance relationship is
"Arlington County coextensive with Arlington Minor Civil Division
coextensive with Arlington Census Designated Place." Coincidental
relationships or relationships which do not require maintenance are
excluded.

The following are the recognized maintenance relationships, their
properties, and the required maintenance.

**6.3.2.1 Coextensive with**

When there exists a one-to-one relationship between two or more
geographic entities or features, this is expressed as a \"coextensive
with\" relationship.

Property: If A is coextensive with B, then B is coextensive with A.

####### Maintenance: If A is coextensive with B, then any change to A results in an equal change to B.

Note 1: The coextensive with relationship is equally valid for a chain
of valid relationships. If A is coextensive with B and B is coextensive
with C, then A is coextensive with C. For example, if county A is
coextensive with metropolitan area B and metropolitan area B is
coextensive with school district C, then county A is coextensive with
school district C.

Note 2: This relationship is expressed only when entities share the same
bounded extent, or have a one-to-one relationship.

**6.3.2.2 Contains nested**

When there exists a relationship where one geographic entity or feature
contains subentities that are contained completely within the entity,
this is expressed as a \"contains nested\" relationship.

Note1: The owner may have one or more contains nested entities or
features and each entity or feature that is a member has a \"nests
within\" relationship.

# Property: If A contains nested B and C, then B nests within A and C nests within A.

Maintenance: If A contains nested B and C, then any change to A results
in an equal change to B or C or both if the change occurs at a shared
boundary.

Note 2: For example, state A contains nested counties B and C, in that
counties B and C are completely within the boundary of state A. State A
also contains nested county D, and therefore counties B and C do not
exhaust the state entity. The contains only nested relationship
described in section 6.3.2.4 is a subset of contains nested.

**6.3.2.3 Nests within**

When there exists a relationship where one or more subentities are
contained completely within an entity, this is expressed as a \"nests
within\" relationship.

Property: If B nests within A, then A contains nested B and may contain
at least one other entity of the same type feature.

Maintenance: If B nests within A, then any areal expansion to B along a
shared boundary with A results in an equal change to A.

Note1: Although it is true that B nests within A and B expands outward
along a shared boundary with A, then A must expand outward. However, it
is not necessarily true in the reverse; if B contracts, A may or may not
contract. A nests within relationship makes no statement about the
properties of A in relationship to B. In some circumstances, entity C
may expand into the area of contraction or a wholly new entity D may be
created.

Note 2: For example, voting districts nest within a county.

**6.3.2.4 Contains only nested**

When there exists a relationship where an entity contains subentities
that are contained completely within the entity and are the extent of
the entity, this is expressed as a \"contains only nested\"
relationship.

Property: If B nests within A, then A contains nested B and contains at
least one other entity of the same type feature.

Maintenance: If B nests within A, then any areal change to B adding
territory from or deleting territory to another feature that does not
nest within A, results in an equal change to A.

Note 1: The contains only nested relationship is a more restrictive
subset of the contains nested relationship and implies complete coverage
of the nesting object.

Note 2: For example, a city may legally only exist in a single township
but not completely cover the township. Any boundary change to the city
where the city shares a boundary with the township requires a boundary
change to the township, but boundary changes to the city internal to the
township will not affect the township boundary. A change to the township
boundary only requires a change to the city boundary if the change is
along a shared boundary segment and would result in placing a part of
the city outside the township (a diminishing of the township). A
contains only relationship exists for all townships in a county. Any
change to the county boundary requires a change to one or more township
boundaries and any change to a township boundary along a shared boundary
segment with the county requires a change to the county boundary. This
is a simple contains only nested relationship.

**7 Data content of governmental unit and other legal entity
boundaries**

**7.1 Description of a governmental unit**

There are many variations to the definition of a governmental unit.
Because of these variations, geographic entities recognized as
governmental units by one organization may not be acknowledged as GUs by
other organizations. Section 1.0 of this National Standard contains the
definition of a governmental unit. The requirements to be compliant with
this standard depend upon whether or not the entity being described fits
the definition of a governmental unit.

Annex C (normative) provides specific definitions of governmental units
and other legal entities that are applicable to this standard. The table
is included in this standard for informational purposes to aid
organizations in identifying their governmental units and other legal
entities and should not be considered an exhaustive listing of
governmental units and other legal entities.

Annex E (informative) provides an additional list of other entities for
which this standard can be applied to facilitate the exchange of
boundary information.

**7.2 Governmental unit and other legal entity boundary dataset element
characteristics**

Annex A (normative) provides the data model for governmental unit data
exchange. The UML model encompasses all mandatory components used to
identify, describe, and store the information required for exchanging
governmental unit and other legal entity boundary information. Annex B
(normative) provides the UML object all entity and attribute
definitions, domains, obligations/conditions, maximum occurrences, and
data types for elements depicted in the Governmental Unit boundary UML
model. Annex J (informative) provides a description of the UML notations
used in the Governmental Unit boundary UML model.

Annex D (informative) provides examples of the information that would be
communicated when exchanging governmental unit boundary information in
accordance with the UML data model in Annex A (normative). The examples
describe the Delaware State boundary as a curve set and the three
Delaware counties as a polygon set. FGDC compliant metadata is also
provided.

Governmental unit boundary dataset description components are depicted
in informative annexes as a graphic illustration in Annex G
(informative) and with more detail as a table in Annex H (informative).
In these annexes, the governmental unit boundary dataset is composed of
three types of components: reference component, type information
component, and instance component. Each of the major sections contains
subsections, some of which may be further subdivided.

**7.2.1 Governmental unit boundary dataset description characteristics**

Annex B (normative), Annex D (informative), and Annex H (informative)
provide perspectives that describe the information necessary to exchange
governmental unit information. This governmental unit boundary
information is described in terms of the governmental unit boundary
dataset description components. Governmental unit boundary dataset
description components are defined by six characteristics:

**7.2.1.1 Component name**

Component name is the label assigned to the governmental unit boundary
dataset description component.

**7.2.1.2 Component definition**

Component definition is the governmental unit boundary dataset
description component definition.

**7.2.1.3 Component domain**

Component domain is the specification of the set of distinct values for
each governmental unit boundary dataset description component.

**7.2.1.4 Obligation/condition (O/C)**

Obligation/condition is the descriptor assigned to a governmental unit
boundary dataset description component that indicates the necessity of
its inclusion in boundary information exchange. The obligation
determines whether the component shall always be present (contain
values), or be present according to established conditions. The
descriptor may have the following values:

**Mandatory (M)** The governmental unit boundary dataset description
component shall be present in all cases, i.e., is required.

**Conditional (C)** The governmental unit boundary dataset description
component shall be present if the condition(s) assigned to the component
is met.

**Optional (O)** The governmental unit boundary dataset description
component may be present or not. Optional governmental unit boundary
dataset description components have been defined to provide a means to
those seeking to more fully document their Governmental Unit Boundary
exchange file.

**7.2.1.5 Maximum occurrences (MO)**

Maximum occurrences is the number of instances a governmental unit
boundary dataset description component may have.

**7.2.1.6 Data type**

Data type is the set of distinct values for representing governmental
unit boundary dataset description components (for example: text, integer
number, real number, or date).

######## 8 Governmental unit boundary file metadata requirement

This standard is compliant with the FGDC Content Standard for Digital
Geospatial Metadata (Version 2.0). The numbers preceding the metadata
elements indicate the location of the definition within the metadata
standard. This section is an overview of the mandatory metadata elements
in the metadata standard. Annex F (informative) specifies the
information necessary when providing metadata for the exchange of
governmental unit boundary information.

The following metadata elements are relevant compound elements and
mandatory elements. An

explanatory statement follows each element.

1.5 Spatial Domain -- The geographic areal domain of the data set.

> 1.6 Keywords -- Words or phrases summarizing an aspect of the data
> set.

1.7 Access Constraints -- Restrictions and legal prerequisites for
accessing the data set. These include any access constraints applied to
assure the protection of privacy or intellectual property, and any
special restrictions or limitations on obtaining the data set.

1.8 Use Constraints -- Restrictions and legal prerequisites for using
the data set after access is granted. These include any use constraints
applied to assure the protection of privacy or intellectual property,
and any special restrictions or limitations on using the data set.

> 2 Data Quality Information -- A general assessment of the quality of
> the data set.
>
> 3 Spatial Data Organization Information -- The mechanism used to
> represent spatial information in the data set

4 Spatial Reference Information -- The description of the reference
frame for, and the means to encode, coordinates in the data set.

> 5 Entity and Attribute Information -- Details about the information
> content of the data set, including the entity types, their attributes,
> and the domains from which attribute values may be assigned.
>
> 6 Distribution Information -- Information about the distributor of and
> options for obtaining the data set
>
> 7 Metadata Reference Information -- Information on the currentness of
> the metadata information, and the responsible party.
>
> 7.1 Metadata Date -- The date that the metadata were created or last
> updated.
>
> 7.4 Metadata Contact -- The party responsible for the metadata
> information.
>
> 7.5 Metadata Standard Name -- The name of the metadata standard used
> to document the data set.
>
> 7.6 Metadata Standard Version -- Identification of the version of the
> metadata standard used to document the data set.

**9 Maintenance authority**

The U.S. Census Bureau on behalf of the U.S. Department of Commerce is
the designated maintenance authority for the Geographic Information
Framework Data Content Standard-Governmental Unit Boundary Data Exchange
Standard. Address any questions to Chief, Geography Division, U.S.
Census Bureau.

**Annex A**

**(normative)**

**Governmental unit boundary UML model**

Annex A (normative) provides the data model for governmental unit data
exchange. The information required for exchanging governmental unit and
other legal entity boundary data is described in the following abstract
object model in Unified Modeling Language (UML). Annex B (normative)
provides the definitions, domains, obligation/condition, maximum
occurrence, and data type for each object and attribute depicted in the
governmental unit boundary UML model. This model is a tool to aid in
understanding the elements necessary for boundary data exchange.

![](media/image1.wmf){width="6.622916666666667in"
height="6.659027777777778in"}

Technical note:

The attribute \"description\" in GUB_Dataset inherits characteristics
from CI_Citation in ISO 19115 -- Geographic Information -- Metadata.

The attribute "geometry" in GUB_CurveIdentification and
GUB_PolygonIdentification inherits characteristics from GM_Curve in ISO
19107 -- Geographic Information -- Spatial Schema.

**Annex B**

**(normative)**

**Governmental unit boundary UML object description**

Annex B (normative) provides all entity and attribute definitions,
domains, obligations/conditions, maximum occurrences and data types for
elements depicted in the governmental unit boundary UML model. In other
words, this table provides reference information about the objects and
attributes in Annex A (normative). Definitions for the terminology
describing the characteristics of the data are provided in 7.2.1.

To implement Annex B, follow the UML diagram in Annex A and use the
following table as a reference for these objects and attributes. Follow
the line numbers in sequence and consult the obligation/condition (O/C)
to determine if the component is mandatory (M), conditional (C) and its
conditions are met, or if it is optional (O). Once it is determined that
the component is required for governmental unit boundary documentation
through its definition and obligation/condition, refer to the domain
which describes the valid values that can be assigned to the data
element. If the component is a compound element, the line will be
shaded, the domain will specify the appropriate lines for the component,
and the data type will specify \'class\'. For data elements, the
characteristic data type describes the kind of value to be provided,
e.g., integer, real, text. The maximum occurrence (MO) will specify if
the element shall only be recorded one time (1) or if the element is
repeatable from one to many times (\*).

  --------------------------- ----------------------------- ---------------------- ----------------- ---------------- -------- ------------------------- ---------------------------
  **B.1 GUB_Dataset**                                                                                                                                    

  **Line \#**                 **Name**                      **Definition**                           **O/C**          **MO**   **Data Type**             **Domain**

  1                           GUB_Dataset                   Set of GU type,                          M                1        Class                     Lines 2-5
                                                            instance, and boundary                                                                       
                                                            information to be                                                                            
                                                            exchanged.                                                                                   

  2                           RN GUB_CurveSet               Composition                              C/ if the        0..\*    Association               GUB_CurveSet
                                                            association between                      boundary                                            
                                                            GUB_CurveSet and                         consists of a                                       
                                                            GUB_Dataset                              set of curves                                       

  3                           RN GUB_PolygonSet             Composition                              C/ if the        0..\*    Association               GUB_PolygonSet
                                                            association between                      boundary                                            
                                                            GUB_PolygonSet and                       consists of a                                       
                                                            GUB_Dataset                              set of polygons                                     

  4                           name                          Identification of the                    M                1        CharacterString           Free text
                                                            dataset                                                                                      

  5                           description                   Description of the                       M                1        CharacterString           CI_Citation
                                                            dataset                                                                                      

                                                                                                                                                         

  **B.1.1 GUB_CurveSet**                                                                                                                                 

  **Line \#**                 **Name**                      **Definition**                           **Obligation**   **MO**   **Data Type**             **Domain**

  6                           GUB_CurveSet                  Set of curves that                       C/ if the        1        Class                     Lines 7-8
                                                            define the GU boundary                   boundary                                            
                                                            being described                          consists of one                                     
                                                                                                     or more curves                                      

  7                           RN GUB_Curve                  Composition                              M                1..\*    Association               GUB_Curve
                                                            association between                                                                          
                                                            GUB_Curve and                                                                                
                                                            GUB_CurveSet                                                                                 

  8                           setID                         Unique identification                    M                1        CharacterString/Integer   Free text, free number
                                                            of the curve set                                                                             

  **B.1.1.1 GUB_Curve**                                                                                                                                  

  **Line \#**                 **Name**                      **Definition**                           **Obligation**   **MO**   **Data Type**             **Domain**

  9                           GUB_Curve                     Set of coordinates                       C/ if the        0..\*    Class                     Lines 10-18
                                                            with no repetition                       boundary                                            
                                                            that define a curve                      consists of one                                     
                                                                                                     or more curves                                      

  10                          RN GUB_GovernmentalUnit       \"boundaryFor\"                          M                1..\*    Association               GUB_GovernmentalUnit
                                                            association between                                                                          
                                                            GUB_Curve and                                                                                
                                                            GUB_GovernmentalUnit                                                                         

  11                          instanceName                  Identification of the                    M                1        CharacterString           Free Text
                                                            single representation                                                                        
                                                            of the feature type,                                                                         
                                                            or specific GU                                                                               
                                                            described                                                                                    

  12                          typeNameReference             Reference to the GU                      M                1        CharacterString           Free text
                                                            type name                                                                                    

  13                          instanceCode                  Specific code which                      C/ if an         0..1     CharacterString/Integer   Free text, free number
                                                            identifies the GU                        instance code                                       
                                                            instance being                           exists                                              
                                                            described                                                                                    

  14                          codingSystemReference         GU type code reference                   C /if a type     0..\*    CharacterString/Integer   Free text
                                                                                                     code exists                                         

  15                          legalAreaDescription          Description of the                       C/ if legal area 0..1     CharacterString           Free text
                                                            legal area, a                            description is                                      
                                                            geographic area whose                    known                                               
                                                            boundaries, name,                                                                            
                                                            origin, and                                                                                  
                                                            legal/statistical area                                                                       
                                                            description result                                                                           
                                                            from charters, laws,                                                                         
                                                            treaties, or other                                                                           
                                                            administrative or                                                                            
                                                            governmental action                                                                          

  16                          functionalStatus              Administrative or                        C/ if functional 0..1     CharacterString           nonfunctioning, active,
                                                            legal activities                         status is known                                     inactive
                                                            associated with                                                                              
                                                            performing the legally                                                                       
                                                            prescribed functions                                                                         
                                                            of a governmental unit                                                                       
                                                            or legal entity                                                                              

  17                          boundaryClassifier            Description of the                       C/ if one or     0..\*    Class                     GUB_BoundaryClassifier
                                                            status of the boundary                   more boundary                                       
                                                                                                     classifiers                                         
                                                                                                     exist                                               

  18                          identification                Specific identifier                      M                1..\*    Class                     GUB_CurveIdentification
                                                            assigned to the                                                                              
                                                            feature                                                                                      

  **B.1.1.1.1                                                                                                                                            
  GUB_GovernmentalUnit**                                                                                                                                 

  **Line \#**                 **Name**                      **Definition**                           **Obligation**   **MO**   **Data Type**             **Domain**

  19                          GUB_GovernmentalUnit          The GU being                             M                1..\*    Class                     Lines 20-28
                                                            documented                                                                                   

  20                          typeName                      The designated name                      M                1        CharacterString           Annex C, free text
                                                            for the type of GU                                                                           
                                                            whose data are being                                                                         
                                                            described                                                                                    

  21                          typeNameAbbreviation          The abbreviated name                     C/ if an         0..1     CharacterString           Free text
                                                            for the type of GU                       abbreviation                                        
                                                            whose data are being                     exists for GU                                       
                                                            described                                Type Name                                           

  22                          typeDefinition                Definition of the type                   C/ if the type   0..1     CharacterString           Annex C, free text
                                                            of GU whose data are                     definition is                                       
                                                            being described                          known                                               

  23                          typeCode                      The specific code                        C/ if a type     0..\*    CharacterString/ Integer  Free number
                                                            which identifies the                     code exists                                         
                                                            GU being described                                                                           

  24                          codingSystemReference         GU type code reference                   M                1..\*    CharacterString/ Integer  FIPS code, free text, free
                                                                                                                                                         number

  25                          maintenanceRelationshipList   List of common areal                     C/ if one or     0..\*    CharacterString           Free text
                                                            information between                      more maintenance                                    
                                                            one or more GUs or                       relationships                                       
                                                            legal entities and                       exist                                               
                                                            geographic area                                                                              
                                                            features for the GU                                                                          
                                                            type being described                                                                         

  26                          contiguousRelationshipList    List of GUs or feature                   C/ if one or     0..\*    CharacterString           Free text
                                                            objects that share a                     more contiguous                                     
                                                            common point or                          relationships                                       
                                                            portion of a boundary                    exist                                               

  27                          composedOfRelationshipList    List of GU or feature                    C/ if one or     0..\*    CharacterString           Free text
                                                            object that contains                     more composed of                                    
                                                            subentities that are                     relationships                                       
                                                            completely contained                     exist                                               
                                                            within and are the                                                                           
                                                            extent of the entity                                                                         

  28                          composesRelationshipList      List of GU subentities                   C/ if one or     0..\*    CharacterString           Free text
                                                            that are completely                      more composes                                       
                                                            contained within an                      relationships                                       
                                                            entity                                   exist                                               

                                                                                                                                                         

  **B.1.1.1.1.1                                                                                                                                          
  GUB_CurveIdentification**                                                                                                                              

  **Line \#**                 **Name**                      **Definition**                           **Obligation**   **MO**   **Data Type**             **Domain**

  29                          GUB_CurveIdentification       Specific identifier                      M                1..\*    Class                     Lines 30-31
                                                            assigned to the GU                                                                           
                                                            boundary curve                                                                               

  30                          geometry                      The shape and                            M                1        Class                     GM_Curve
                                                            geo-location of a                                                                            
                                                            feature                                                                                      

  31                          curveID                       Specific identifier                      M                1..\*    CharacterString/Integer   Free text, free number
                                                            assigned to the GU                                                                           
                                                            boundary curve                                                                               

  **B.1.1.1.1.1.1                                                                                                                                        
  GUB_BoundaryClassifier**                                                                                                                               

  **Line \#**                 **Name**                      **Definition**                           **Obligation**   **MO**   **Data Type**             **Domain**

  32                          GUB_BoundaryClassifier        Description of the                       C/ if one or     0..\*    Class                     Lines 33-34
                                                            status of the boundary                   more boundary                                       
                                                                                                     classifiers                                         
                                                                                                     exist                                               

  33                          boundaryClassifier            A term or phrase which                   M                1..\*    CharacterString           Free text
                                                            describes the status                                                                         
                                                            of the boundary                                                                              

  34                          boundaryClassifierReference   Reference which                          M                1..\*    CharacterString           Free text
                                                            defines the term or                                                                          
                                                            terms used in the                                                                            
                                                            boundary classifier                                                                          

  **B.1.2 GUB_PolygonSet**                                                                                                                                

  **Line \#**                 **Name**                      **Definition**                           **Obligation**   **MO**   **Data Type**             **Domain**

  35                          GUB_PolygonSet                Set of one or more                       C/ if the        1        Class                     Lines 36-37
                                                            polygons that define a                   boundary                                            
                                                            GU boundary being                        consists of one                                     
                                                            described.                               or more polygons                                    

  36                          RN GUB_Polygon                Composition                              M                1        Association               GUB_Polygon
                                                            association between                                                                          
                                                            GUB_Polygon and                                                                              
                                                            GUB_PolygonSet                                                                               

  37                          setID                         Unique identification                    M                1        CharacterString/Integer   Free text
                                                            of the polygon set                                                                           

                                                                                                                                                         

  **B.1.2.1 GUB_Polygon**                                                                                                                                

  **Line \#**                 **Name**                      **Definition**                           **Obligation**   **MO**   **Data Type**             **Domain**

  38                          GUB_Polygon                   A surface patch that                     C/ if the        1..\*    Class                     Lines 39-47
                                                            is defined by a set of                   boundary                                            
                                                            boundary curves and an                   consists of one                                     
                                                            underlying surface to                    or more polygons                                    
                                                            which these curves                                                                           
                                                            adhere                                                                                       

  39                          RN GUB_GovernmentalUnit       \"boundaryFor\"                          M                1..\*    Association               GUB_GovernmentalUnit
                                                            association between                                                                          
                                                            GUB_Polygon and                                                                              
                                                            GUB_GovernmentalUnit                                                                         

  40                          instanceName                  Identification of the                    M                1        CharacterString           Free text
                                                            single representation                                                                        
                                                            of the feature type,                                                                         
                                                            or specific GU                                                                               
                                                            described                                                                                    

  41                          typeNameReference             Reference to the GU                      M                1        CharacterString           Free text
                                                            type name                                                                                    

  42                          instanceCode                  Specific code which                      C/ if an         0..1     CharacterString/Integer   Free text/free number
                                                            identifies the GU                        instance code                                       
                                                            instance being                           exists                                              
                                                            described                                                                                    

  43                          codingSystemReference         GU type code reference                   C/ if a type     0..\*    CharacterString/Integer   Free text
                                                                                                     code exists                                         

  44                          legalAreaDescription          Description of the                       C/ if legal area 0..1     CharacterString           Free text
                                                            legal area, a                            description is                                      
                                                            geographic area whose                    known                                               
                                                            boundaries, name,                                                                            
                                                            origin, and                                                                                  
                                                            legal/statistical area                                                                       
                                                            description result                                                                           
                                                            from charters, laws,                                                                         
                                                            treaties, or other                                                                           
                                                            administrative or                                                                            
                                                            governmental action                                                                          

  45                          functionalStatus              Administrative or                        C/ if functional 0..1     CharacterString           nonfunctioning, active,
                                                            legal activities                         status is known                                     inactive
                                                            associated with                                                                              
                                                            performing the legally                                                                       
                                                            prescribed functions                                                                         
                                                            of a governmental unit                                                                       
                                                            or legal entity                                                                              

  46                          boundaryClassifier            Description of the                       C/ if one or     0..\*    Class                     GUB_BoundaryClassifier
                                                            status of the boundary                   more boundary                                       
                                                                                                     classifiers                                         
                                                                                                     exist                                               

  47                          identification                 Specific identifier                     M                1..\*    Class                     GUB_PolygonIdentification
                                                            assigned to the                                                                              
                                                            feature                                                                                      
  --------------------------- ----------------------------- ---------------------- ----------------- ---------------- -------- ------------------------- ---------------------------

B.1.2.1.1 GUB_PolygonIdentification

  -------- --------------------------- ------------------- ---------------- -------- ------------------------- ------------
  **Line   **Name**                    **Definition**      **Obligation**   **MO**   **Data Type**             **Domain**
  \#**                                                                                                         

  48       GUB_PolygonIdentification   Specific identifier M                1..\*    Class                     Lines 48-50
                                       assigned to the GU                                                      
                                       boundary polygon                                                        

  49       geometry                    Shape and           M                1        Class                     GM_Polygon
                                       geo-location of a                                                       
                                       feature                                                                 

  50       polygonID                   Specific identifier M                1..\*    CharacterString/Integer   Free
                                       assigned to the GU                                                      text/free
                                       boundary polygon                                                        number
  -------- --------------------------- ------------------- ---------------- -------- ------------------------- ------------

**\
Annex C**

**(normative)**

**Governmental unit and other legal entity definitions**

###### 

Annex C (normative) provides definitions of legal governmental units and
other legal areas that are generally recognized.

**C.1 Alaska Native Regional Corporation (ANRC)**

Corporate entity established to conduct both business and nonprofit
affairs of Alaska Native pursuant to the Alaska Native Claims Settlement
Act of 1972 (Public Law 92-203). Twelve ANRCs are geographic entities
that cover most of the State of Alaska (the Annette Islands Reserve--an
American Indian reservation--is excluded from any ANRC). (A thirteenth
ANRC represents Alaska Natives who do not live in Alaska and do not
identify with any of the 12 corporations).

Entity type: Legal

**C.2 Alaska Native Village**

Alaska Native Village is defined in section 3 of Public Law 92-203 to
mean any tribe, band, clan, group, village, community, or association in
Alaska listed in section 11 and 16 in this Act, or which meets the
requirements of this Act, and which the Secretary *of the Interior*
determines was, on the 1970 census enumeration date (as shown by the
census or other evidence satisfactory to the Secretary, who shall make
findings of fact in each instance), composed of twenty-five or more
Natives.

Entity type: Legal

**C.3 American Indian Reservation**

Federal American Indian reservations are areas that have been set aside
by the United States for the use of tribes. The exterior boundaries of
which are more particularly defined in the final Tribal treaties,
agreements, executive orders, Federal statutes, secretarial orders, or
judicial determinations. These entities are known as colonies,
communities, pueblos, rancherias, ranches, reservations, reserves,
villages, Indian communities, and Indian villages. The Bureau of Indian
Affairs maintains a list of Federally recognized Tribal governments.
Some State governments have established reservations for tribes
recognized by the State.

Entity Type: GU

**C.4 American Indian Tribal Subdivision**

American Indian Tribal Subdivisions are administrative subdivisions of
Federally recognized American Indian reservations, off-reservation trust
lands, or Oklahoma Tribal statistical areas (OTSAs), known as areas,
chapters, communities, or districts. These entities are internal units
of self-government or administration that serve social, cultural, and/or
economic purposes for the American Indians on the reservations,
off-reservation trust lands or OTSAs.

Entity Type: Legal

**C.5 American Indian Trust Land**

Trust lands are areas for which the United States holds title in trust
for the benefit of a tribe (Tribal trust land) or for an individual
Indian (individual trust land.) Trust lands can be alienated or
encumbered only by the owner with the approval of the Secretary of the
Interior or his/her authorized representative. Trust lands may be
located on or off of a reservation.

Entity Type: GU (either alone or in combination with an associated
American Indian Reservation)

**C.6 Borough**

Boroughs are legally established geographic entities in Alaska, minor
civil divisions in each of the five counties that comprise the City of
New York, and a type of incorporated place in Connecticut, New Jersey,
and Pennsylvania.

Entity Type: Legal

**C.7 City**

A type of incorporated place in 49 States and the District of Columbia

Entity Type: GU

**C.8 Congressional District**

Congressional Districts (CDs) are the 435 areas from which people are
elected to the U.S. House of Representatives. After the apportionment of
congressional seats among the States, based on census population counts,
each State is responsible for establishing CDs for the purpose of
electing representatives. Each CD is to be as equal in population to all
other CDs in the State as practical.

Entity Type: Legal

**C.9 Consolidated City**

A consolidated government is a unit of local government for which the
functions of an incorporated place and its county or minor civil
division (MCD) have merged. The legal aspects of this action may result
in both the primary incorporated place and the county or MCD continuing
to exist as legal entities, even though the county or MCD performs few
or no governmental functions and has few or no elected officials. Where
this occurs, and where one or more other incorporated places in the
county or MCD continue to function as separate governments, even though
they have been included in the consolidated government, the primary
incorporated place is referred to as a consolidated city.

Entity Type: GU

**C.10 County or equivalent legal entity**

The primary legal divisions of most States are termed "counties." In
Louisiana, these divisions are known as parishes. In Alaska, which has
no counties, the statistically equivalent entities are census areas,
city and boroughs (as in Juneau City and Borough), a municipality
(Anchorage), and organized boroughs. In four States (Maryland, Missouri,
Nevada, and Virginia), there are one or more incorporated places that
are independent of any county organization and thus constitute primary
divisions of their States; these incorporated places are known as
"independent cities". The District of Columbia has no primary division.
In American Samoa, the primary divisions are districts and islands. In
the Northern Mariana Islands, the primary subdivision is municipalities.
In Puerto Rico, the primary subdivision is municipios. In the Virgin
Islands, the principal islands of St. Croix, St. John, and St. Thomas
are the division. Guam has no primary divisions.

Entity Type: GU

**C.11 County Subdivision**

County subdivisions are the primary divisions of counties and
statistically equivalent entities for data presentation purposes. They
include census county divisions, census subareas, minor civil divisions
(MCDs), unorganized territories, and incorporated places that are
independent of any MCD. In Puerto Rico, Barrio and Barrio-Pueblo are
legal subdivisions of a municipio.

Entity Type: Legal

**C.12 Hawaiian Home Land**

Hawaiian Home Lands are areas held in trust for native Hawaiians by the
State of Hawaii, pursuant to the Hawaiian Homes Commission Act of 1920,
as amended.

Entity Type: Legal

**C.13 Incorporated Place**

Incorporated places are legally established in each State, under the
laws of their respective States. Some examples are cities, boroughs,
city and borough, municipalities, towns, and villages. In four States
(Maryland, Missouri, Nevada, and Virginia), there are one or more
incorporated places known as "independent cities" that are primary
subdivisions of a State and legally not part of any county.

Entity Type: GU and legal

**C.14 Minor Civil Division**

Minor civil divisions (MCDs) are the primary governmental or
administrative divisions of a county in many States (parish in
Louisiana). They represent many different kinds of legal entities with a
wide variety of governmental and/or administrative functions. Some
examples of MCDs are assessment districts, charter townships, gores,
grants, locations, magisterial districts, road districts, and townships.

Entity Type: GU and Legal

**C.15 Municipality**

Municipalities are legally established entities in Alaska and the
Northern Mariana Islands.

Entity Type: Legal

**C.16 Sub-Minor Civil Division**

Sub-Minor Civil Divisions (Sub-MCDs) are second-order subdivision of
counties and equivalent entities, for example, subbarios in Puerto Rico.

Entity Type: Legal

**C.17 Special District**

Special district governments are independent, special-purpose
governmental units (other than school district governments) that exist
as separate entities with substantial administrative and fiscal
independence from general-purpose local governments. Special district
governments provide specific services that are not being supplied by
existing general purpose governments. Most perform a single function,
but in some instances, their enabling legislation allows them to provide
several, usually related, types of services.

Entity Type: Legal

**C.18 States and equivalent entities**

States are the primary governmental divisions of the United States. The
District of Columbia is treated as a statistical equivalent of a State.
Some Federal agencies also treat a number of entities that are not legal
divisions of the United States as statistically equivalent to a State:
American Samoa, the Commonwealth of the Northern Mariana Islands, Guam,
Puerto Rico, and the Virgin Islands of the United States.

Entity Type: GU

**C.19 State Legislative District**

State Legislative Districts (SLDs) are the areas from which members are
elected to State legislatures. The SLDs embody the upper (senate) and
lower (house) chambers of the State legislature.

Entity Type: Legal

**C.20 Subbario**

Subbarrios are legal subdivisions of Barrio and Barrio-Pueblo.
Subbarrios in 23 municipios are the primary legal subdivisons of the
barrio-pueblo and some barrios. There are no geographic entities in the
United States equivalent to the subbarrio.

Entity Type: Legal

**C.21 Town**

A type of functioning minor civil division found in the New England
States, New York, and Wisconsin; a type of incorporated place in 30
States and the Virgin Islands of the United States.

Entity Type: GU

**C.22 Village**

A type of incorporated place in 20 States and American Samoa.

Entity Type: GU

**Annex D**

**(informative)**

**Governmental unit boundary encoding example**

Annex D (informative) provides examples of the information that would be
communicated when exchanging governmental unit boundary information in
accordance with the UML data model in Annex A (normative). Example D.1
documents how one could exchange Delaware State boundary information as
a set of curves and example D.2 documents a similar exchange, but for
the three Delaware counties as a set of polygons. FGDC compliant
metadata applicable for both examples D.1 and D.2 is provided in D.3.
The metadata in D.3 is entered only one time because it is the same for
both examples. The examples and metadata are presented as flat ASCII
files. Spaces between lines are for readability only.

**NOTE: This annex is for illustrative purposes only; the actual
encoding of governmental unit boundary information depends upon the
application.**

**D.1 Delaware State curve example**

This is an example of encoding a single entity whose boundary is defined
by a series of curve segments. For this example, the coastline is
considered the State boundary.

> GUB_Dataset:
>
> name: Example_curve.txt
>
> description: Example of how to encode a boundary of a single entity
> defined by a series of curve segments.
>
> GUB_CurveSet:
>
> setID: DelawareState19950830
>
> GUB_GovernmentalUnit:
>
> typeName: State
>
> typeNameAbbreviation: ST
>
> typeDefinition: States are the primary governmental divisions of the
> United States. The District of Columbia is treated as a statistical
> equivalent of a State. Some Federal agencies also treat a number of
> entities that are not legal divisions of the United States as
> statistically equivalent to a State: American Samoa, the Commonwealth
> of the Northern Mariana Islands, Guam, Puerto Rico, and the Virgin
> Islands of the United States.
>
> codingSystemReference: FIPS State Code
>
> contiguousRelationshipList\[5\]:
>
> curve segment 1 and Maryland State Boundary
>
> curve segment 2 and Maryland State Boundary
>
> curve segment 3 and Atlantic Ocean
>
> curve segment 4 and Delaware Bay
>
> curve segment 5 and Pennsylvania State Boundary

GUB_Curve:

geometry \[3\]:

> startPoint: -75.79, 39.72
>
> intermediatePoint \[2\]:
>
> -75.76, 39.30
>
> -75.72, 38.83
>
> endPoint: -75.70, 38.46
>
> instanceName: Delaware
>
> typeNameReference: State
>
> curveID: 1
>
> instanceCode: 10
>
> codingSystemReference: FIPS State Code
>
> functionalStatus: active
>
> GUB_Curve:
>
> geometry \[3\]:
>
> startPoint: -75.70, 38.46
>
> endPoint: -75.04, 38.45
>
> instanceName: Delaware
>
> typeNameReference: State
>
> curveID: 2
>
> instanceCode: 10
>
> codingSystemReference: FIPS State Code
>
> functionalStatus: active
>
> GUB_Curve:
>
> geometry \[3\]:
>
> startPoint: -75.04, 38.45
>
> endPoint: -75.08, 38.80
>
> instanceName: Delaware
>
> typeNameReference: State
>
> curveID: 3
>
> instanceCode: 10
>
> codingSystemReference: FIPS State Code
>
> functionalStatus: active
>
> GUB_Curve:
>
> geometry \[3\]:
>
> startPoint: -75.08, 38.80
>
> intermediatePoint\[10\]:
>
> -75.19, 38.81
>
> -75.31, 38.94
>
> -75.32, 39.01
>
> -75.40, 39.07
>
> -75.40, 39.25
>
> -75.52, 39.36
>
> -75.59, 39.46
>
> -75.56, 39.57
>
> -75.61, 39.61
>
> -75.48, 39.72
>
> endPoint: -75.41, 39.79
>
> instanceName: Delaware
>
> typeNameReference: State
>
> curveID: 4
>
> instanceCode: 10
>
> codingSystemReference: FIPS State Code
>
> functionalStatus: active
>
> GUB_Curve:
>
> geometry \[3\]:
>
> startPoint: -75.41, 39.79
>
> intermediatePoint\[4\]:
>
> -75.48, 39.82
>
> -75.58, 39.40
>
> -75.66, 39.83
>
> -75.73, 39.78
>
> endPoint: -75.79, 39.72
>
> instanceName: Delaware
>
> typeNameReference: State
>
> curveID: 5
>
> instanceCode: 10
>
> codingSystemReference: FIPS State Code
>
> functionalStatus: active

**D.2 Delaware counties polygon example**

This is an example of encoding multiple entities whose boundaries are
defined by polygons. For this example, the coastline is the county
boundary.

> GUB_Dataset:
>
> name: Example_polygon.txt
>
> description: Example of how to encode a boundary of multiple entities
> defined by polygons.
>
> GUB_PolygonSet:
>
> setID: DelawareCounties19950830
>
> GUB_GovernmentalUnit:
>
> typeName: County
>
> typeNameAbbreviation: CO
>
> typeDefinition: The primary legal divisions of most States are termed
> "counties." In Louisiana, these divisions are known as parishes. In
> Alaska, which has no counties, the statistically equivalent entities
> are census areas, city and boroughs (as in Juneau City and Borough), a
> municipality (Anchorage), and organized boroughs. In four States
> (Maryland, Missouri, Nevada, and Virginia), there are one or more
> incorporated places that are independent of any county organization
> and thus constitute primary divisions of their States; these
> incorporated places are known as "independent cities". The District of
> Columbia has no primary division. In American Samoa, the primary
> divisions are districts and islands. In the Northern Mariana Islands,
> the primary subdivision is municipalities. In Puerto Rico, the primary
> subdivision is municipios. In the Virgin Islands, the principal
> islands of St. Croix, St. John, and St. Thomas are the division. Guam
> has no primary divisions.
>
> codingSystemReference: FIPS State and County Code

maintenanceRelationshipList\[1\]:

Nests within State of Delaware

> contiguousRelationshipList\[5\]:
>
> County boundary and Delaware River
>
> County boundary and Pennsylvania State boundary
>
> County boundary and Delaware Bay
>
> County boundary and Kent county boundary
>
> County boundary and Maryland State boundary
>
> GUB_Polygon:
>
> geometry \[3\]:
>
> startPoint: -75.79, 39.72
>
> intermediatePoint\[15\]:
>
> -75.76, 39.30
>
> -75.70, 39.30
>
> -75.66, 39.29
>
> -75.61, 39.31
>
> -75.56, 39.34
>
> -75.52, 39.36
>
> -75.59, 39.46
>
> -75.56, 39.57
>
> -75.61, 39.61
>
> -75.48, 39.72
>
> -75.41, 39.79
>
> -75.48, 39.82
>
> -75.58, 39.40
>
> -75.66, 39.83
>
> -75.73, 39.78
>
> endPoint: -75.79, 39.72
>
> instanceName: New Castle
>
> typeNameReference: County
>
> polygonID: N
>
> instanceCode: 10003
>
> codingSystemReference: FIPS State and County Code
>
> functionalStatus: active
>
> GUB_GovernmentalUnit:
>
> typeName: County
>
> typeNameAbbreviation: CO
>
> typeDefinition: Same as guPolygonID: N
>
> codingSystemReference: FIPS State and County Code
>
> maintenanceRelationshipList\[1\]:
>
> Nests within the State of Delaware
>
> contiguousRelationshipList\[4 \]:
>
> County boundary and Maryland State boundary
>
> County boundary and New Castle county boundary
>
> County boundary and Delaware Bay
>
> County boundary and Sussex county boundary
>
> GUB_Polygon:
>
> geometry \[3\]:
>
> startPoint: -75.76, 39.30
>
> intermediatePoint\[11\]:
>
> -75.72, 38.83
>
> -75.62, 38.83
>
> -75.52, 38.86
>
> -75.45, 38.91
>
> -75.40, 38.93
>
> -75.39, 38.95
>
> -75.31, 38.94
>
> -75.32, 39.01
>
> -75.40, 39.07
>
> -75.40, 39.25
>
> -75.52, 39.36
>
> endPoint: : -75.76, 39.30
>
> instanceName: Kent
>
> typeNameReference: County
>
> polygonID: K
>
> instanceCode: 10001
>
> codingSystemReference: FIPS State and County Code
>
> functionalStatus: active
>
> GUB_GovernmentalUnit:
>
> typeName: County
>
> typeNameAbbreviation: CO
>
> typeDefinition: Same as guPolygonID: N
>
> codingSystemReference: FIPS State and County Code
>
> maintenanceRelationshipList\[1\]:
>
> Nests within the State of Delaware
>
> contiguousRelationshipList\[4\]:
>
> County boundary and Maryland State boundary
>
> County boundary and Kent county boundary
>
> County boundary and Delaware Bay
>
> County boundary and Atlantic Ocean
>
> GUB_Polygon:
>
> geometry \[3\]:
>
> startPoint: -75.72, 38.83
>
> intermediatePoint\[10\]:
>
> -75.70, 38.46
>
> -75.04, 38.45
>
> -75.08, 38.80
>
> -75.19, 38.81
>
> -75.31, 38.94
>
> -75.39, 38.95
>
> -75.40, 38.93
>
> -75.45, 38.91
>
> -75.52, 38.86
>
> -75.62, 38.83
>
> endPoint: -75.72, 38.83
>
> instanceName: Sussex
>
> typeNameReference: County
>
> polygonID: S
>
> instanceCode: 10005
>
> codingSystemReference: FIPS State and County Code
>
> functionalStatus: active

**NOTE: This annex is for illustrative purposes only; the actual
encoding of governmental unit boundary information depends upon the
application.**

**D.3 Example metadata**

Identification_Information:

Citation:

Citation_Information:

Originator: Bureau of Transportation Statistics (comp.)

Publication_Date: 1997

Title: 104th Congressional District Boundaries

Publication_Information:

Publication_Place: Washington, DC

Publisher: Bureau Transportation Statistics

Description:

Abstract: The 104th Congressional District Boundaries database is a
geographic database of political boundaries of the 104th Congressional
districts.

Purpose: The data provide users with information about the locations of
congressional districts, primarily for national planning applications.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1995

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: Annually

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -75.66, 39.83

East_Bounding_Coordinate: -75.00, 38.80

North_Bounding_Coordinate: -75.66, 39.83

South_Bounding_Coordinate: -75.79, 39.72

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: area

Theme_Keyword: background

Theme_Keyword: polygon

Theme_Keyword: boundary

Theme_Keyword: congressional district

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: United States

Access_Constraints: None

Use_Constraints: None. Acknowledgement of the Bureau of Transportation
Statistics National Transportation Atlas Database would be appreciated
in products derived from these data.

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report: No Information

Logical_Consistency_Report: No Information

Completeness_Report: No Information

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: U.S. Census Bureau

Publication_Date: 1994

Title: TIGER Extract - Thinned Boundary Files

Type_of_Source_Media: Online

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1994

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: TIGER

Source_Contribution: Spatial information for the 104th Congressional
District boundaries.

Process_Step:

Process_Description: Individual files for the Congressional Districts in
Alaska, Hawaii, Puerto Rico, and the 48 contiguous States were merged
into a single data set.

Process_Date: 1995

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.000464

Longitude_Resolution: 0.000464

Geographic_Coordinate_Units: Decimal Degrees

Geodetic_Model:

Horizontal_Datum_Name: North American Datum 83

Ellipsoid_Name: Geodetic Reference System 80

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: CD104.ARE

Entity_Type_Definition: Polygon Attribute Table.

Entity_Type_Definition_Source: U.S. Census Bureau

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: BTS Product Distribution Center

Contact_Address:

Address_Type: mailing and physical address

Address: 400 Seventh Street, SW

City: Washington

State_or_Province: District of Columbia

Postal_Code: 20590

Contact_Voice_Telephone: (202) 366 DATA

Contact_Facsimile_Telephone: (202) 366 3640

Distribution_Liability: No information

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: BTS (Bureau of Transportation Statistics standard format
for spatial data)

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: http://www.bts.gov/gis/ntatlas/background.html

> Fees: No information

Metadata_Reference_Information:

Metadata_Date: 19950830

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Bureau of Transportation Statistics

Contact_Address:

Address_Type: mailing and physical address

Address: 400 Seventh Street, SW

City: Washington

State_or_Province: District of Columbia

Postal_Code: 20590

Contact_Voice_Telephone: (202) 366 3282

Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial
Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

**Annex E**

**(informative)**

**Use of standard with other entities**

While this standard provides a standardized way to communicate boundary
information for governmental units and other specified legal entities,
it may be used to communicate boundary information about other
geographic entities. Annex E (informative) provides a non-exhaustive
list of other geographic entities for which this standard may be used:

Local legislative district

Tribal legislative district

Voting district/polling district

School district

Special local district

Federally defined or owned, and managed land (National Park Service
areas, Bureau of Land

Management areas, National Forest Service areas)

State owned and managed land (State parks, State game lands, legally
defined traffic zones)

Locally owned and managed land (local parks, municipal land fills)

Tribal owned and managed land

Federally regulated or programmatic administration area
(empowerment/enterprise zones, off-shore mineral rights, community block
grant areas, qualified neighborhood areas qualifying for funding under
some statute or regulation)

**Annex F**

**(informative)**

**Governmental unit boundary file metadata requirement**

Annex F (informative) describes the metadata information necessary to
document a governmental unit or other legal entity boundary dataset for
exchange. Annex F is a subset of relevant FGDC *Content Standard for
Digital Geospatial Metadata (Version 2.0)* metadata elements,
maintaining all mandatory elements. Definitions for the terminology
describing the characteristics of the data are the same as those defined
for in Annex B (normative), provided in 7.21. This table is to be read
in the same manner as that of Annex B.

  -------- ---------------- --------------------- ---------------- -------- ---------- -------------------
  **Line   **Name**         **Definition**        **Obligation**   **MO**   **Data     **Domain**
  \#**                                                                      Type**     

  1        Identification   Basic information     M                1        Compound   Lines 1.1-1.9
           Information      about the data set                                         

  1.1      Citation         Information to be     M                1        Compound   Line 8.0
                            used to reference the                                      
                            data set                                                   

  1.2      Description      A characterization of M                1        Compound   Lines 1.2.1-1.2.2
                            the data set,                                              
                            including its                                              
                            intended use and                                           
                            limitations                                                

  1.2.1    Abstract         A brief narrative     M                1        Text       Free text
                            summary of the data                                        
                            set                                                        

  1.2.2    Purpose          A summary of the      M                1        Text       Free text
                            intentions with which                                      
                            the data set was                                           
                            developed                                                  

  1.3      Time Period      Time period(s) for    M                1        Compound   Line 9.0
           Content          which the data set                                         
                            corresponds to the                                         
                            currentness reference                                      

  1.3.1    Currentness      The basis on which    M                1        Text       \"ground
           Reference        the time period of                                         condition\" \"
                            content information                                        publication date\"
                            is determined                                              Free text

  1.4      Status           The state of and      M                1        Compound   Lines 1.4.1-1.4.2
                            maintenance                                                
                            information for the                                        
                            data set                                                   

  1.4.1    Progress         The state of the data M                1        Text       \"complete\" \"in
                            set                                                        work\" \"planned\"

  1.4.2    Maintenance and  The frequency with    M                1        Text       \"continually\"
           Update Frequency which changes and                                          \"daily\"
                            additions are made to                                      \"weekly\"
                            the data set after                                         \"monthly\"
                            the initial data set                                       \"annually\"
                            is completed                                               \"unknown\" \"as
                                                                                       needed\"
                                                                                       \"irregular\"
                                                                                       \"none planned\"
                                                                                       Free text
  -------- ---------------- --------------------- ---------------- -------- ---------- -------------------

  --------- ------------- --------------------- ---------------- -------- ---------- --------------------
  **Line    **Name**      **Definition**        **Obligation**   **MO**   **Data     **Domain**
  \#**                                                                    Type**     

  1.5       Spatial       The geographic areal  M                1        Compound   Lines 1.5.1-1.5.1.4
            Domain        domain of the data                                         
                          set                                                        

  1.5.1     Bounding      The limits of         M                1        Compound   Lines
            Coordinates   coverage of a data                                         1.5.1.1-1.5.1.4
                          set expressed by                                           
                          latitude and                                               
                          longitude values in                                        
                          the order                                                  
                          western-most,                                              
                          eastern-most,                                              
                          northern-most, and                                         
                          southern-most. For                                         
                          data sets that                                             
                          include a complete                                         
                          band of latitude                                           
                          around the earth, the                                      
                          West Bounding                                              
                          Coordinate shall be                                        
                          assigned the value                                         
                          -180.0, and the East                                       
                          Bounding Coordinate                                        
                          shall be assigned the                                      
                          value 180.0                                                

  1.5.1.1   West Bounding Western-most          M                1        Real       -180.0\<=West
            Coordinate    coordinate of the                                          Bounding
                          limit of coverage                                          Coordinate\<=180.0
                          expressed in                                               
                          longitude                                                  

  1.5.1.2   East Bounding Eastern-most          M                1        Real       -180.0\<=East
            Coordinate    coordinate of the                                          Bounding
                          limit of coverage                                          Coordinate\<=180.0
                          expressed in                                               
                          longitude                                                  

  1.5.1.3   North         Northern-most         M                1        Real       -90.0\<=North
            Bounding      coordinate of the                                          Bounding
            Coordinate    limit of coverage                                          Coordinate\<=90.0;
                          expressed in latitude                                      North Bounding
                                                                                     Coordinate\<=South
                                                                                     Bounding Coordinate

  1.5.1.4   South         Southern-most         M                1        Real       -90.0\<=South
            Bounding      coordinate of the                                          Bounding
            Coordinate    limit of coverage                                          Coordinate\<=90.0;
                          expressed in latitude                                      South Bounding
                                                                                     Coordinate\<=North
                                                                                     Bounding Coordinate

  1.6       Keywords      Words or phrases      M                1        Compound   Lines 1.6.1-1.6.2.2
                          summarizing an aspect                                      
                          of the data set                                            

  1.6.1     Theme         Subjects covered by   M                N        Compound   Lines
                          the data set (for a                                        1.6.1.1-1.6.1.2
                          list of commonly used                                      
                          thesauri, see Part                                         
                          IV: Subject/index                                          
                          term sources in                                            
                          Network Development                                        
                          and MARC Standards                                         
                          Office, 1988, US MARC                                      
                          code list for                                              
                          realtors, sources,                                         
                          and description                                            
                          conventions:                                               
                          Washington, Library                                        
                          of Congress)                                               

  1.6.1.1   Theme Keyword Reference to a        M                1        Text       \"None\" Free text
            Thesaurus     formally registered                                        
                          thesaurus or a                                             
                          similar authoritative                                      
                          source of theme                                            
                          keywords                                                   

  1.6.1.2   Theme Keyword Common-use word or    M                N        Text       Free text
                          phrase used to                                             
                          describe the subject                                       
                          of the data set                                            

  1.6.2.1   Place Keyword Reference to a        M                1        Text       \"None\"
            Thesaurus     formally registered                                        \"Geographic Names
                          thesaurus or a                                             Information System\"
                          similar authoritative                                      Free text
                          source of theme place                                      
                          keywords                                                   

  1.6.2.2   Place Keyword The geographic name   M                N        Text       Free text
                          of a location covered                                      
                          by a data set                                              
  --------- ------------- --------------------- ---------------- -------- ---------- --------------------

  -------- -------------- --------------------- ---------------- -------- ---------- -------------------
  **Line   **Name**       **Definition**        **Obligation**   **MO**   **Data     **Domain**
  \#**                                                                    Type**     

  1.7      Access         Restrictions and      M                1        Text       \"None\" Free text
           Constraints    legal prerequisites                                        
                          for accessing the                                          
                          data set. These                                            
                          include any access                                         
                          constraints applied                                        
                          to assure the                                              
                          protection of privacy                                      
                          or intellectual                                            
                          property, and any                                          
                          special restrictions                                       
                          or limitations on                                          
                          obtaining the data                                         
                          set                                                        

  1.8      Use            Restrictions and      M                1        Text       \"None\" Free text
           Constraints    legal prerequisites                                        
                          for using the data                                         
                          set after access is                                        
                          granted. These                                             
                          include any use                                            
                          constraints applied                                        
                          to assure the                                              
                          protection of privacy                                      
                          or intellectual                                            
                          property, and any                                          
                          special restrictions                                       
                          or limitations on                                          
                          using the data set                                         

  1.9      Point of       Contact information   O                1        Compound   Line 10.0
           Contact        for an individual or                                       
                          organization that is                                       
                          knowledgeable about                                        
                          the data set                                               

  2        Data Quality   A general assessment  C - when data    1        Compound   Lines 2.1-2.5.2.3
           Information    of the quality of the quality                              
                          data set              information is                       
                          (Recommendations on   available for                        
                          information to be     the data set                         
                          reported and tests to                                      
                          be performed are                                           
                          found in \"Spatial                                         
                          Data Quality\" which                                       
                          is chapter 3 of part                                       
                          1 in Department of                                         
                          Commerce, 1992,                                            
                          Spatial Data Transfer                                      
                          Standard)                                                  

  2.1      Attribute      An assessment of the  C - when         1        Compound   Line 2.1.1
           Accuracy       accuracy of the       attribute                            
                          identification of     accuracy quality                     
                          entities and          information is                       
                          assignment of         available for                        
                          attribute values in   the data set                         
                          the data set                                               

  2.1.1    Attribute      An explanation of the M                1        Text       Free text
           Accuracy       accuracy of the                                            
           Report         identification of the                                      
                          entities and                                               
                          assignments of values                                      
                          in the data set and a                                      
                          description of the                                         
                          tests used                                                 

  2.2      Logical        An explanation of the M                1        Text       Free text
           Consistency    fidelity of                                                
           Report         relationships in the                                       
                          data set and tests                                         
                          used                                                       

  2.3      Completeness   Information about     M                1        Text       Free text
           Report         omissions, selection                                       
                          criteria,                                                  
                          generalization,                                            
                          definitions used, and                                      
                          other rules used to                                        
                          derive the data set                                        

  2.4      Positional     An assessment of the  C - when         1        Compound   Lines 2.4.1-2.4.2.1
           Accuracy       accuracy of the       positional                           
                          positions of spatial  accuracy quality                     
                          objects               information is                       
                                                available for                        
                                                the data set                         
  -------- -------------- --------------------- ---------------- -------- ---------- -------------------

  ----------- ------------- --------------------- ---------------- -------- ---------- -------------------
  **Line \#** **Name**      **Definition**        **Obligation**   **MO**   **Data     **Domain**
                                                                            Type**     

  2.4.1       Horizontal    An estimate of        C - when         1        Compound   Line 2.4.1.1
              Positional    accuracy of the       horizontal                           
              Accuracy      horizontal positions  positional                           
                            of the spatial        accuracy quality                     
                            objects               information is                       
                                                  available for                        
                                                  the data set                         

  2.4.1.1     Horizontal    An explanation of the M                1        Text       Free text
              Positional    accuracy of the                                            
              Accuracy      horizontal coordinate                                      
              Report        measurements and a                                         
                            description of the                                         
                            tests used                                                 

  2.4.2       Vertical      An estimate of        C - when         1        Compound   Line 2.4.2.1
              Positional    accuracy of the       vertical                             
              Accuracy      vertical positions in positional                           
                            the data set          accuracy quality                     
                                                  information is                       
                                                  available for                        
                                                  the data set                         

  2.4.2.1     Vertical      An explanation of the M                1        Text       Free text
              Positional    accuracy of the                                            
              Accuracy      vertical coordinate                                        
              Report        measurements and a                                         
                            description of the                                         
                            tests used                                                 

  2.5         Lineage       Information about the M                1        Compound   Lines 2.5.1-2.5.2.3
                            events, parameters,                                        
                            and source data which                                      
                            constructed the data                                       
                            set, and information                                       
                            about the responsible                                      
                            parties                                                    

  2.5.1       Source        List of sources and a C - if source    N        Compound   Lines 2.5.1-2.5.1.6
              Information   short discussion of   information is                       
                            the information       known and                            
                            contributed by each   relevant to the                      
                                                  quality                              

  2.5.1.1     Source        Reference for a       M                1        Compound   Line 8.0
              Citation      sources data set                                           

  2.5.1.3     Type of       The medium of the     M                1        Text       \"paper\"
              Source Media  source data set                                            \"stable-base
                                                                                       material\"
                                                                                       \"microfiche\"
                                                                                       \"microfilm\"
                                                                                       \"audiocassette\"
                                                                                       \"chart\" \"
                                                                                       filmstrip\"
                                                                                       \"transparency\"
                                                                                       \"videocassette\"
                                                                                       \"videodisc\"
                                                                                       \"videotape\"
                                                                                       \"physical model\"
                                                                                       \"computer
                                                                                       program\" \"disc\"
                                                                                       \"cartridge tape\"
                                                                                       \"magnetic tape\"
                                                                                       \"online\"
                                                                                       \"CD-ROM\"
                                                                                       \"electronic b

  2.5.1.4     Source Time   Time period(s) for    M                1        Compound   Lines 2.5.1.4.1,
              Period of     which the source data                                      9.0
              Content       set corresponds to                                         
                            the ground                                                 

  2.5.1.4.1   Source        The basis on which    M                1        Text       \"ground
              Currentness   the source time                                            condition\"
              Reference     period of content                                          \"publication
                            information of the                                         date\" Free text
                            data is determined                                         
  ----------- ------------- --------------------- ---------------- -------- ---------- -------------------

  ----------- ------------- --------------------- ---------------- -------- ---------- -------------------
  **Line \#** **Name**      **Definition**        **Obligation**   **MO**   **Data     **Domain**
                                                                            Type**     

  3.3.1.1     SDTS Point    Name of point and     M                1        Text       (The domain is from
              and Vector    vector spatial                                             \"Spatial Data
              Object Type   objects used to                                            Concepts,\" which
                            locate zero-, one-                                         is Chapter 2 of
                            and two-dimensional                                        Part 1 in
                            spatial locations in                                       Department of
                            the data set                                               Commerce, 1992,
                                                                                       Spatial Data
                                                                                       Transfer Standard
                                                                                       (SDTS) (Federal
                                                                                       Information
                                                                                       Processing Standard
                                                                                       173): Washingotn,
                                                                                       Department of
                                                                                       Commerce, National
                                                                                       Institute of
                                                                                       Standands and
                                                                                       Technology):
                                                                                       \"Point\" \"Entity
                                                                                       point\" \"Label
                                                                                       point\" \"Area
                                                                                       point\" \"Node,
                                                                                       planar graph\"
                                                                                       \"Node, network\"
                                                                                       \"String\" \"Link\"
                                                                                       \"Complete chain\"
                                                                                       \"Area chain\"
                                                                                       \"Network chain,
                                                                                       planar graph\"
                                                                                       \"Network chain,
                                                                                       nonplanar graph\"
                                                                                       \"Circular arc,
                                                                                       three point
                                                                                       center\"
                                                                                       \"Elliptical arc\"
                                                                                       \"Uniform
                                                                                       B-spline\"
                                                                                       \"Piecewise
                                                                                       Bezier\" \"Ring
                                                                                       with mixed
                                                                                       composition\"
                                                                                       \"Ring composed of
                                                                                       strings\" \"Ring
                                                                                       composed of
                                                                                       chains\" \"Ring
                                                                                       composed of arcs\"
                                                                                       \"G-polygon\"
                                                                                       \"GT-polygon
                                                                                       composed of rings\"
                                                                                       \"GT-polygon
                                                                                       composed of
                                                                                       chains\" \"Void
                                                                                       polygon composed of
                                                                                       rings\" \"Void
                                                                                       polygon composed of
                                                                                       chains\"

  3.3.1.2     Point and     The total number of   O                1        Integer    Point and Vector
              Vector Object the point or vector                                        Object Count \> 0
              Count         object type occurring                                      
                            in the data set                                            

  3.3.2       VPF Terms     Point and vector      M                1        Compound   Lines
              Description   object information                                         3.3.2.1-3.3.2.2.1
                            using the terminology                                      
                            and concepts from                                          
                            Department of                                              
                            Defense, 1992, Vector                                      
                            Product Format                                             
                            (MIL-STD-600006):                                          
                            Philadelphia,                                              
                            Department of                                              
                            Defense, Defense                                           
                            Printing Service                                           
                            Detachment Office.                                         
                            (Note that this                                            
                            reference to the VPF                                       
                            is used ONLY to                                            
                            provide a set of                                           
                            terminology for the                                        
                            point and vector                                           
                            objects.)                                                  

  3.3.2.1     VPF Topology  The completeness of   M                1        Text       0 \<= VPF Topology
              Level         the topology carried                                       Level \<= 3
                            by the data set                                            

  3.3.2.2     VPF Point and Information about VPF M                N        Compound   Line 3.3.2.2.1
              Vector Object point and vector                                           
              Information   objects                                                    

  3.3.2.2.1   VPF Point and Name of point and     M                1        Text       (The domain is from
              Vector Object vector spatial                                             Department of
              Type          objects used to                                            Defense, 1992,
                            locate zero-, one-                                         Vector Product
                            and two-dimensional                                        Format
                            spatial locations in                                       (MIL-STD-600006):
                            the data set                                               Philadelphia,
                                                                                       Department of
                                                                                       Defense, Defense
                                                                                       Printing Service
                                                                                       Detachment Office):
                                                                                       \"Node\" \"Edge\"
                                                                                       \"Face\" \"Text\"
  ----------- ------------- --------------------- ---------------- -------- ---------- -------------------

  --------- ------------- --------------------- ---------------- -------- ---------- ---------------------
  **Line    **Name**      **Definition**        **Obligation**   **MO**   **Data     **Domain**
  \#**                                                                    Type**     

  4         Spatial       The description of    C - if the       1        Compound   Lines 4.1-4.2.2.4
            Reference     the reference frame   reference frame                      
            Information   for, and the means to of coordinates                       
                          encode, coordinates   and/or                               
                          in the data set       coordinate                           
                                                encoding means                       
                                                is known                             

  4.1       Horizontal    The reference frame   C - if the       1        Compound   Lines 4.1.1-4.1.4.4
            Coordinate    or system from which  reference frame                      
            System        linear or angular     of horizontal                        
            Definition    quantities are        coordinates                          
                          measured and assigned and/or the                           
                          to the position that  horizontal                           
                          a point occupies      coordinate                           
                                                encoding means                       
                                                is known                             

  4.1.1 OR                                      M (one option                        Lines 4.1.1.1-4.1.1.3
  4.1.2 OR                                      must be                              OR 4.1.2.1-4.1.2.4.4
  4.1.3                                         selected)                            OR 4.1.3.1-4.1.3.2

  4.1.1     Geographic    The quantities of     M                1        Compound   Lines 4.1.1.1-4.1.1.3
                          latitude and                                               
                          longitude which                                            
                          define the position                                        
                          of a point on the                                          
                          Earth\'s surface with                                      
                          respect to a                                               
                          reference spheroid                                         

  4.1.1.1   Latitude      The minimum           M                1        Real       Latitude Resolution
            Resolution    difference between                                         \> 0.0
                          two adjacent latitude                                      
                          values expressed in                                        
                          Geographic Coordinate                                      
                          Units of measure                                           

  4.1.1.2   Longitude     The minimum           M                1        Real       Longitude Resolution
            Resolution    difference between                                         \> 0.0
                          two adjacent                                               
                          longitude values                                           
                          expressed in                                               
                          Geographic Coordinate                                      
                          Units of measure                                           

  4.1.1.3   Geographic    Units of measure used M                1        Text       \"decimal degrees\"
            Coordinate    for the latitude and                                       \"decimal minutes\"
            Units         longitude values                                           decimal seconds\"
                                                                                     \"degrees and decimal
                                                                                     minutes\" \"degrees,
                                                                                     minutes, and decimal
                                                                                     seconds\" \"radians\"
                                                                                     \"grads\"

  4.1.2     Planar        The quantities of     M                N        Compound   Lines
                          distances, or                                              4.1.2.1-4.1.2.1.1
                          distances and angles,                                      
                          which define the                                           
                          position of a point                                        
                          on a reference plane                                       
                          to which the surface                                       
                          of the Earth has been                                      
                          projected                                                  

  4.1.2.1                                        M (one option                       Lines 4.1.2.1.1 OR
  OR                                            must be                              4.1.2.2.1 OR
  4.1.2.2                                       selected)                            4.1.2.3.1-4.1.2.4.4
  OR                                                                                 
  4.1.2.3                                                                            

  4.1.2.1   Map           The systematic        M                1        Compound   Lines 4.1.2.1.1
            Projection    representation of all                                      
                          or part of the                                             
                          surface of the Earth                                       
                          on a plane or                                              
                          developable surface                                        
  --------- ------------- --------------------- ---------------- -------- ---------- ---------------------

  ------------- ---------------- --------------------- ---------------- -------- ---------- -------------------------
  **Line \#**   **Name**         **Definition**        **Obligation**   **MO**   **Data     **Domain**
                                                                                 Type**     

  4.1.2.1.1     Map Projection   Name of the map       M                1        Text       \"Albers Conical Equal
                Name             projection                                                 Area\" \"Azimuthal
                                                                                            Equidistant\"
                                                                                            \"Equidistant Conic\"
                                                                                            \"Equirectangular\"
                                                                                            \"General Vertical
                                                                                            Near-Sided Perspective\"
                                                                                            \"Gnomonic\" \"Lampert
                                                                                            Azimuthal Equal Area\"
                                                                                            \"Lambert Conformal
                                                                                            Conic\" \"Mercator\"
                                                                                            \"Modified Stereographic
                                                                                            for Alaska\" \"Miller

  4.1.2.2       Grid Coordinate  A plane-rectangular   M                1        Compound   Line 4.1.2.2.1
                System           coordinate system                                          
                                 usually based on, and                                      
                                 mathematically                                             
                                 adjusted to, a map                                         
                                 projection so that                                         
                                 geographic positions                                       
                                 can be readily                                             
                                 transformed to and                                         
                                 from plane                                                 
                                 coordinates                                                

  4.1.2.2.1     Grid Coordinate  Name of the grid      M                1        Text       \"Universal Transverse
                System Name      coordinate system                                          Mercator\" \"State Plane
                                                                                            Coordinate System 1927\"
                                                                                            \"State Plane Coordinate
                                                                                            System 1983\" \"ARC
                                                                                            Coordinate System\"
                                                                                            \"other grid system\"

  4.1.2.3       Local Planar     Any right-handed      M                1        Compound   Lines 4.1.2.3.1-4.1.2.3.2
                                 planar coordinate                                          
                                 system of which the                                        
                                 z-axis coincides with                                      
                                 a plumb line through                                       
                                 the origin that                                            
                                 locally is aligned                                         
                                 with the surface of                                        
                                 the Earth                                                  

  4.1.2.3.1     Local Planar     A description of the  M                1        Text       Free text
                Description      local planar system                                        

  4.1.2.3.2     Local Planar     A description of the  M                1        Text       Free text
                Georeference     information provided                                       
                Information      to register the local                                      
                                 planar system to the                                       
                                 Earth (e.g., control                                       
                                 points, satellite                                          
                                 ephemeral data,                                            
                                 inertial navigation                                        
                                 data)                                                      

  4.1.2.4       Planar           Information about the M                1        Compound   Lines 4.1.2.4.1
                Coordinate       coordinate system                                          
                Information      developed on the                                           
                                 planar surface                                             

  4.1.2.4.1     Planar           The means used to     M                1        Text       \"coordinate pair\"
                Coordinate       represent horizontal                                       \"distance and bearing\"
                Encoding Method  positions                                                  \"row and column\"

  4.1.2.4.2 OR                                          M (one option                       Lines
  4.1.2.4.3                                            must be                              4.1.2.4.2.1-4.1.2.4.2.2
                                                       selected)                            OR
                                                                                            4.1.2.4.3.1-4.1.2.4.3.5

  4.1.2.4.2     Coordinate       The method of         M                1        Compound   Lines
                Representation   encoding the position                                      4.1.2.4.2.1-4.1.2.4.2.2
                                 of a point by                                              
                                 measuring its                                              
                                 distance from                                              
                                 perpendicular                                              
                                 reference axes (the                                        
                                 \"coordinate pair\"                                        
                                 and \"row and                                              
                                 column\" methods)                                          

  4.1.2.4.2.1   Abscissa         The (nominal) minimum M                1        Real       Abscissa Resolution\> 0.0
                Resolution       distance between the                                       
                                 \"x\" or column                                            
                                 values of two                                              
                                 adjacent points,                                           
                                 expressed in Planar                                        
                                 Distance Units of                                          
                                 measure                                                    

  4.1.2.4.2.2   Ordinate         The (nominal) minimum M                1        Real       Ordinate Resolution \>
                Resolution       distance between the                                       0.0
                                 \"y\" or row values                                        
                                 of two adjacent                                            
                                 points, expressed in                                       
                                 Planar Distance Units                                      
                                 of measure                                                 

  4.1.2.4.3     Distance and     A method of encoding  M                1        Compound   Lines
                Bearing          the position of a                                          4.1.2.4.3.1-4.1.2.4.3.5
                Representation   point by measuring                                         
                                 its distance and                                           
                                 direction (azimuth                                         
                                 angle) from another                                        
                                 point                                                      
  ------------- ---------------- --------------------- ---------------- -------- ---------- -------------------------

  ------------- -------------- --------------------- ---------------- -------- ---------- -------------------
  **Line \#**   **Name**       **Definition**        **Obligation**   **MO**   **Data     **Domain**
                                                                               Type**     

  4.1.2.4.3.1   Distance       The minimum distance  M                1        Real       Distance Resolution
                Resolution     measurable between                                         \> 0.0
                               two points, expressed                                      
                               Planar Distance Units                                      
                               of measure                                                 

  4.1.2.4.3.2   Bearing        The minimum angle     M                1        Real       Bearing Resolution
                Resolution     measurable between                                         \> 0.0
                               two points, expressed                                      
                               in Bearing Units of                                        
                               measure                                                    

  4.1.2.4.3.3   Bearing Units  Units of measure used M                1        Text       \"Decimal degrees\"
                               for angles                                                 \"Decimal minutes\"
                                                                                          \" Decimal
                                                                                          Seconds\" \"Degrees
                                                                                          and decimal
                                                                                          minutes\"
                                                                                          \"Degrees, minutes,
                                                                                          and decimal
                                                                                          seconds\"
                                                                                          \"Radians\"
                                                                                          \"Grads\"

  4.1.2.4.3.4   Bearing        Direction from which  M                1        Text       \"North\" \"South\"
                Reference      the bearing is                                             
                Direction      measured                                                   

  4.1.2.4.3.5   Bearing        Axis from which the   M                1        Text       \"Assumed\"
                Reference      bearing is measured                                        \"Grid\"
                Meridian                                                                  \"Magnetic\"
                                                                                          \"Astronomic\"
                                                                                          \"Geodetic\"

  4.1.2.4.4     Planar         Units of measure used M                1        Text       \"meters\"
                Distance Units for distances                                              \"international
                                                                                          feet\" \"survey
                                                                                          feet\" Free text

  4.1.3         Local          A description of any  M                1        Compound   Lines
                               coordinate system                                          4.1.3.1-4.1.3.2
                               that is not aligned                                        
                               with the surface of                                        
                               the Earth                                                  

  4.1.3.1       Local          A description of the  M                1        Text       Free text
                Description    coordinate system and                                      
                               its orientation to                                         
                               the surface of the                                         
                               Earth                                                      

  4.1.3.2       Local          A description of the  M                1        Text       Free text
                Georeference   information provided                                       
                Information    to register the local                                      
                               system to the Earth                                        
                               (e.g., control                                             
                               points, satellite                                          
                               ephemeral data,                                            
                               inertial navigation                                        
                               data)                                                      

  4.1.4         Geodetic Model Parameters for the    C - if the       1        Compound   Lines 4.1.4 -
                               shape of the earth    geodetic model                       4.1.4.4
                                                     for the                              
                                                     coordinates in                       
                                                     the dataset is                       
                                                     known                                

  4.1.4.1       Horizontal     The identification    C - if the       1        Text       \"North American
                Datum Name     given to the          horizontal datum                     Datum of 1927\"
                               reference system used for the                              \"North American
                               for defining the      coordinates in                       Datum of 1983\"
                               coordinates of points the dataset is                       Free text
                                                     known                                

  4.1.4.2       Ellipsoid Name Identification given  M                1        Text       \"Clarke 1866\"
                               to established                                             \"Geodetic
                               representations of                                         Reference System
                               the Earth\'s shape                                         80\" Free text

  4.1.4.3       Semi-Major     Radius of the         M                1        Real       Semi-major Axis \>
                Axis           equatorial axis of                                         0.0
                               the ellipsoid                                              
  ------------- -------------- --------------------- ---------------- -------- ---------- -------------------

  --------- ------------- --------------------- ---------------- -------- ---------- -------------------
  **Line    **Name**      **Definition**        **Obligation**   **MO**   **Data     **Domain**
  \#**                                                                    Type**     

  4.1.4.4   Denominator   The denominator of    M                1        Real       Denominator of
            of Flattening the ratio of the                                           Flattening \> 0.0
            Ratio         difference between                                         
                          the equatorial and                                         
                          polar radii of the                                         
                          ellipsoid when the                                         
                          numerator is set to 1                                      

  4.2       Vertical      The reference frame   C - if vertical  1        Compound   Lines 4.2.1-4.2.2.4
            Coordinate    or system from which  reference frame                      
            System        vertical distances    or system for                        
            Definition    (altitude or depths)  the coordinates                      
                          are measured          in the dataset                       
                                                is known                             

  4.2.1     Altitude      The reference frame   C - if altitude  1        Compound   Lines
            System        or system from which  reference frame                      4.2.1.1-4.2.1.4
            Definition    altitudes             or system for                        
                          (elevations) are      the coordinates                      
                          measured. The term    is known                             
                          \"altitude\" is used                                       
                          instead of the common                                      
                          term \"elevation\" to                                      
                          conform to the                                             
                          terminology in                                             
                          Federal Information                                        
                          Processing Standards                                       
                          70-1 and 173                                               

  4.2.1.1   Altitude      The identification    M                1        Text       \"National Geodetic
            Datum Name    given to the surface                                       Vertical Datum of
                          taken as the surface                                       1929\" \"North
                          of reference from                                          American Vertical
                          which altitudes are                                        Datum of 1988\"
                          measured                                                   Free text

  4.2.1.2   Altitude      The minimum distance  M                N        Real       Altitude Resolution
            Resolution    possible between two                                       \> 0.0
                          adjacent altitude                                          
                          values, expressed in                                       
                          Altitude Distance                                          
                          Units of measure                                           

  4.2.1.3   Altitude      Units in which        M                1        Text       \"meters\" \"feet\"
            Distance      altitudes are                                              Free text
            Units         recorded                                                   

  4.2.1.4   Altitude      The means used to     M                1        Text       \"Explicit
            Encoding      encode the altitudes                                       elevation
            Method                                                                   coordinate included
                                                                                     with horizontal
                                                                                     coordinates\"
                                                                                     \"Implicit
                                                                                     coordinate\"
                                                                                     \"Attribute
                                                                                     values\"

  4.2.2     Depth System  The reference frame   C - if depth     1        Compound   Lines
            Definition    or system from which  reference frame                      4.2.2.1-4.2.2.4
                          depths are measured   or system for                        
                                                the coordinates                      
                                                is known                             

  5.1.1.2   Entity Type   The description of    M                1        Text       Free text
            Definition    the entity type                                            

  5.1.1.3   Entity Type   The authority of the  M                1        Text       Free text
            Definition    definition                                                 
            Source                                                                   
  --------- ------------- --------------------- ---------------- -------- ---------- -------------------

  ------------------------------------------------------------------------------------------------------
  **Line    **Name**      **Definition**        **Obligation**   **MO**   **Data     **Domain**
  \#**                                                                    Type**     
  --------- ------------- --------------------- ---------------- -------- ---------- -------------------
  4.2.2.1   Depth Datum   The identification    M                1        Text       \"Local surface\"
            Name          given to surface of                                        \"Chart datum;
                          reference from which                                       datum for sounding
                          depths are measured                                        reduction\"
                                                                                     \"Lowest
                                                                                     astronomical tide\"
                                                                                     \"Highest
                                                                                     astronomical tide\"
                                                                                     \"Mean low water\"
                                                                                     \"Mean high water\"
                                                                                     \"Mean sea level\"
                                                                                     \"Land survey
                                                                                     datum\" \"Mean low
                                                                                     water springs\"
                                                                                     \"Mean high water
                                                                                     springs\" \"Mean
                                                                                     low water neap\"
                                                                                     \"Mean high water
                                                                                     neap\" \"Mean lower
                                                                                     low water\" \"Mean
                                                                                     lower low water
                                                                                     springs\" \"Mean
                                                                                     higher high water\"
                                                                                     \"Mean higher low
                                                                                     water\" \"Mean
                                                                                     lower hight water\"
                                                                                     \"Spring tide\"
                                                                                     \"Tropic lower low
                                                                                     water\" \"Neap
                                                                                     tide\" \"High
                                                                                     water\" \"Higher
                                                                                     high water\" \"Low
                                                                                     water\" \"Low-water
                                                                                     datum\" \"Lowest
                                                                                     low water\" \"Lower
                                                                                     low water\"
                                                                                     \"Lowest normal low
                                                                                     water\" \"Mean tide
                                                                                     level\" \"Indiann
                                                                                     sproing low water\"
                                                                                     \"High-water full
                                                                                     and charge\"
                                                                                     \"Low-water full
                                                                                     and charge\"
                                                                                     \"Columbia River
                                                                                     datum\" \"Gulf
                                                                                     Coast low water
                                                                                     daturm\"
                                                                                     \"Equatorial
                                                                                     springs low water\"
                                                                                     \"Approximate
                                                                                     lowest astronomical
                                                                                     tide\" \"No
                                                                                     correction\" free
                                                                                     text

  4.2.2.2   Depth         The minimum distance  M                N        Real       Depth Resolution \>
            Resolution    possible between two                                       0.0
                          adjacent depth                                             
                          values, expressed in                                       
                          Depth Distance Units                                       
                          of measure                                                 

  4.2.2.3   Depth         Units in which depths M                1        Text       \"meters\" \"feet\"
            Distance      are recorded                                               Free text
            Units                                                                    

  4.2.2.4   Depth         The means used to     M                1        Text       \"Explicit depth
            Encoding      encode depths                                              coordinate included
            Method                                                                   with horizontal
                                                                                     coordinates\"
                                                                                     \"Implicit
                                                                                     coordinate\"
                                                                                     \"Attribute
                                                                                     values\"

  5         Entity and    Details about the     C - if entity    1        Compound   Lines 5.1-5.2.2
            Attribute     information content   type, entity                         
            Information   of the data set,      attribute, and                       
                          including the entity  attribute value                      
                          types, their          domains are used                     
                          attributes, and the   in the data set                      
                          domains from which                                         
                          attribute values may                                       
                          be assigned                                                

  5.1                                           M (one option             Compound   Lines 5.1.1-5.1.1.3
  AND/OR                                        must be selected                     AND/OR 5.2.1-5.2.2
  5.2                                           )                                    

  5.1       Detailed      Description of the    M                N        Compound   Lines 5.1.1-5.1.1.3
            Description   entities, attributes,                                      
                          attribute values, and                                      
                          related                                                    
                          characteristics                                            
                          encoded in the data                                        
                          set                                                        

  5.1.1     Entity Type   The definition and    M                1        Compound   Lines
                          description of a set                                       5.1.1.1-5.1.1.3
                          into which similar                                         
                          entity instances are                                       
                          classified                                                 

  5.1.1.1   Entity Type   The name of the       M                1        Text       Free text
            Label         entity                                                     

  5.1.1.2   Entity Type   The description of    M                1        Text       Free text
            Definition    the entity type                                            
  ------------------------------------------------------------------------------------------------------

  ----------------- -------------- ------------------------- ---------------- -------- ---------- -------------------------------
  **Line \#**       **Name**       **Definition**            **Obligation**   **MO**   **Data     **Domain**
                                                                                       Type**     

  5.1.1.3           Entity Type    The authority of the      M                1        Text       Free text
                    Definition     definition                                                     
                    Source                                                                        

  5.2               Overview       Summary of, and citation  M                N        Compound   Lines 5.2.1-5.2.2
                    Description    to detailed description                                        
                                   of, the information                                            
                                   content of the data set                                        

  5.2.1             Entity and     Detailed summary of the   M                1        Text       Free text
                    Attribute      information contained in                                       
                    Overview       a data set                                                     

  5.2.2             Entity and     Reference to the complete M                N        Text       Free text
                    Attribute      description of the entity                                      
                    Detail         types, attributes, and                                         
                    Citation       attribute values for the                                       
                                   data set                                                       

  6                 Distribution   Information about the     C - if           N        Compound   Lines 6.1-6.4.3
                    Information    distributor of and        information                          
                                   options for obtaining the about data set                       
                                   data set                  distribution is                      
                                                             available or                         
                                                             known                                

  6.1               Distributor    The party from whom the   M                1        Compound   Line 10.0
                                   data set may be obtained                                       

  6.3               Distribution   Statement of the          M                1        Text       Free text
                    Liability      liability assumed by the                                       
                                   distributor                                                    

  6.4               Standard Order The common ways in which  C - if order     N        Compound   Lines 6.4.2-6.4.3
                    Process        the data set may be       process exists                       
                                   obtained or received, and and is known                         
                                   related instructions and                                       
                                   fee information                                                

  6.4.1 OR 6.4.2                                             M (one option             Compound   Lines 6.4.1 OR 6.4.2.2.1.1.1.1
                                                             must be                              
                                                             selected)                            

  6.4.1             Non-Digital    The description of        M                 1       Text       Free text
                    Form           options for obtaining the                                      
                                   data set on                                                    
                                   non-computer-compatible                                        
                                   media                                                          

  6.4.2             Digital Form   The description of        M                N        Text       Free text
                                   options for obtaining the                                      
                                   data set on                                                    
                                   computer-compatible media                                      

  6.4.2.1           Digital        Description of the form   M                1        Compound   Line 6.4.2.1.1
                    Transfer       of the data to be                                              
                    Information    distributed                                                    

  6.4.2.1.1         Format Name    The name of the data      M                1        Text       \"ARCE\" \"ARCG\" \"ASCII\"
                                   transfer format                                                \"BIL\" \"BIP\" \"BSQ\" \"CDF\"
                                                                                                  \"CFF\" \"COORD\" \"DEM\"
                                                                                                  \"DFAD\" \"DGN\" \"DIGEST\"
                                                                                                  \"DLG\" \"DTED\" \"DWG\"
                                                                                                  \"DX90\" \"DXF\" \"ERDAS\"
                                                                                                  \"GRASS\" \"HDF\" \"IGDS\"
                                                                                                  \"IGES\" \"MOSS\" \"netCDF\"
                                                                                                  \"NITF\" \"RPF\" \"RVC\"
                                                                                                  \"FVG\" \"SDTS\" \"SIF\"
                                                                                                  \"SLF\" TIFF\" \"TGRLN\'
                                                                                                  \"VPT\" Free text

  6.4.2.2           Digital        The means and media by    M                N        Compound   Lines 6.4.2.2.1-6.4.2.2.1.1.1.1
                    Transfer       which a data set is                                            
                    Option         obtained from the                                              
                                   distributor                                                    

  6.4.2.2.1         Online Option  Information required to   M                1        Compound   Lines
                                   directly obtain the data                                       6.4.2.2.1.1-6.4.2.2.1.1.1.1
                                   set electronically                                             

  6.4.2.2.1.1       Computer       Instructions for          M                N        Compound   Lines
                    Contact        establishing                                                   6.4.2.2.1.1.1-6.4.2.2.1.1.1.1
                    Information    communications with the                                        
                                   distribution computer                                          

  6.4.2.2.1.1.1     Network        The electronic address    M                1        Compound   Line 6.4.2.2.1.1.1.1
                    Address        from which the data set                                        
                                   can be obtained from the                                       
                                   distribution computer.                                         

  6.4.2.2.1.1.1.1   Network        The name of the file or   M                N        Text       Free text
                    Resource Name  service from which the                                         
                                   data set can be obtained                                       

  **Line \#**       **Name**       **Definition**            **Obligation**   **MO**   **Data     **Domain**
                                                                                       Type**     

  6.4.3             Fees           The fees and terms for    M                1        Text       Free text
                                   retrieving the data set                                        

  7                 Metadata       Information on the        M                1        Compound   Lines 7.1-7.6
                    Reference      currentness of the                                             
                    Information    metadata information, and                                      
                                   the responsible party                                          

  7.1               Metadata Date  The date that the         M                1        Date       free date
                                   metadata were created or                                       
                                   last updated                                                   

  7.2               Metadata       The date of the latest    O                1        Date       free date; Metadata Future
                    Review Date    review of the metadata                                         Review Date later than Metadata
                                   entry                                                          Date

  7.4               Metadata       The party responsible for M                1        Compound   Line 10.0
                    Contact        the metadata information                                       

  7.5               Metadata       The name of the metadata  M                1        Text       \"FGDC Content Standard for
                    Standard Name  standard used to document                                      Digital Geospatial Metadata\"
                                   the data set                                                   Free text

  7.6               Metadata       Identification of the     M                1        Text       Free text
                    Standard       version of the metadata                                        
                    Version        standard used to document                                      
                                   the data set                                                   

  8                 Citation       The recommended reference M                1        Compound   Lines 8.1-8.10
                    Information    to be used for the data                                        
                                   set (Note: this section                                        
                                   provides a means of                                            
                                   stating the citation of a                                      
                                   data set, and is used by                                       
                                   other sections of the                                          
                                   metadata standard. This                                        
                                   section is never used                                          
                                   alone.)                                                        

  8.1               Originator     The name of the           M                N        Text       \"Unknown\" Free text
                                   organization or                                                
                                   individual that developed                                      
                                   the data set. If the name                                      
                                   of editors or compilers                                        
                                   are provided, the name                                         
                                   must be followed by                                            
                                   \"(ed.)\" or \"(comp.)\"                                       
                                   respectively                                                   

  8.2               Publication    The date when the data    M                1        Date       \"Unknown\" \"Unpublished
                    Date           set is published or                                            material\" free date
                                   otherwise made available                                       
                                   for release                                                    

  8.4               Title          The name by which the     M                1        Text       Free text
                                   data set is known                                              

  8.8               Publication    Publication details for   C if the data    1        Compound   Lines 8.81-8.82
                    Information    published data sets       set is published                     

  8.8.1             Publication    the name of the city (and M                1        Text       Free text
                    Place          state or province, and                                         
                                   country, if needed to                                          
                                   identify the city) where                                       
                                   the data set was                                               
                                   published or released                                          

  8.8.2             Publisher      the name of the           M                1        Text       Free text
                                   individual or                                                  
                                   organization that                                              
                                   published the data set                                         

  8.10              Online Linkage The name of an online     O                1        Text       Free text
                                   computer resource that                                         
                                   contains the data set.                                         
                                   Entries should follow the                                      
                                   Uniform Resource Locator                                       
                                   convention of the                                              
                                   Internet                                                       

  9                 Time Period    Information about the     M                1        Compound   Lines 9.1-9.3.3
                    Information    date and time of an                                            
                                   event. (Note: this                                             
                                   section provides a means                                       
                                   of stating temporal                                            
                                   information, and is used                                       
                                   by other sections of the                                       
                                   metadata standard. This                                        
                                   section is never used                                          
                                   alone.)                                                        

  9.1 OR 9.2 OR 9.3                                          M (one option                        Lines 9.1.1 OR 9.1-9.1.1 OR
                                                             must be                              9.3.1-9.3.3
                                                             selected)                            
  ----------------- -------------- ------------------------- ---------------- -------- ---------- -------------------------------

  -------- -------------- --------------------- ---------------- -------- ---------- -------------------
  **Line   **Name**       **Definition**        **Obligation**   **MO**   **Data     **Domain**
  \#**                                                                    Type**     

  9.1      Single         Means of encoding a   M                1        Compound   Line 9.1.1
           Date/Time      single date and time                                       

  9.1.1    Calendar Date  The year (and         M                1        Date       \"Unknown\" free
                          optionally month, or                                       date
                          month and day)                                             

  9.2      Multiple       Means of encoding     M                N        Compound   Lines 9.1-9.1.1
           Dates/Times    multiple individual                                        
                          dates and times                                            

  9.3      Range of       Means of encoding a   M                1        Compound   Lines 9.3.1-9.3.3
           Dates/Times    range of dates and                                         
                          times                                                      

  9.3.1    Beginning Date The first year (and   M                1        Date       \"Unknown\" free
                          optionally month, or                                       date
                          month and day) of the                                      
                          event                                                      

  9.3.3    Ending Date    The last year (and    M                1        Date       \"Unknown\" free
                          optionally month, or                                       date
                          month and day) for                                         
                          the event                                                  

  10       Contact        Identity of, and      M                1        Compound   Lines 10.1-10.8
           Information    means to communicate                                       
                          with, person(s) and                                        
                          organization(s)                                            
                          associated with the                                        
                          data set (Note: this                                       
                          section provides a                                         
                          means of identifying                                       
                          individuals and                                            
                          organizations, and is                                      
                          used by other                                              
                          sections of the                                            
                          metadata standard.                                         
                          This section is never                                      
                          used alone.)                                               

  10.1 OR                                       M (one option                        Lines 10.1.1-10.1.2
  10.2                                          must be                              OR 10.1.2
                                                selected)                            

  10.1     Contact Person The person, and the   M                1        Compound   Lines 10.1.1-10.1.2
           Primary        affiliation of the                                         
                          person, associated                                         
                          with the data set.                                         
                          Used in cases where                                        
                          the association of                                         
                          the person to the                                          
                          data set is more                                           
                          significant than the                                       
                          association of the                                         
                          organization to the                                        
                          data set.                                                  

  10.1.1   Contact Person The name of the       M                1        Text       Free text
                          individual to which                                        
                          the contact type                                           
                          applies                                                    

  10.1.2   Contact        The name of the       O                1        Text       Free text
           Organization   organization to which                                      
                          the contact type                                           
                          applies                                                    

  10.2     Contact        The organization, and M                1        Compound   Line 10.1.2
           Organization   the member of the                                          
           Primary        organization,                                              
                          associated with the                                        
                          data set. Used in                                          
                          cases where the                                            
                          association of the                                         
                          organization to the                                        
                          data set is more                                           
                          significant than the                                       
                          association of the                                         
                          person to the data                                         
                          set                                                        

  10.1.2   Contact        The name of the       M                1        Text       Free text
           Organization   organization to which                                      
                          the contact type                                           
                          applies                                                    

  10.1.1   Contact Person The name of the       O                1        Text       Free text
                          individual to which                                        
                          the contact type                                           
                          applies                                                    
  -------- -------------- --------------------- ---------------- -------- ---------- -------------------

  -------- ------------ --------------------- ---------------- -------- ---------- -------------------
  **Line   **Name**     **Definition**        **Obligation**   **MO**   **Data     **Domain**
  \#**                                                                  Type**     

  10.3     Contact      The title of the      O                1        Text       Free text
           Position     individual                                                 

  10.4     Contact      The address for the   M                N        Compound   Lines 10.4.1-10.4.6
           Address      organization or                                            
                        individual                                                 

  10.4.1   Address Type The information       M                1        Text       \"mailing\"
                        provided by the                                            \"physical\"
                        address                                                    \"mailing and
                                                                                   physical\", Free
                                                                                   text

  10.4.2   Address      An address line for   C - if the       N        Text       Free text
                        the address           contact address                      
                                              is mailing type                      

  10.4.3   City         The city of the       M                1        Text       Free text
                        address                                                    

  10.4.4   State or     The State or province M                1        Text       Free text
           Province     of the address                                             

  10.4.5   Postal Code  The ZIP or other      M                1        Text       Free text
                        postal code of the                                         
                        address                                                    

  10.4.6   Country      The country of the    O                1        Text       Free text
                        address                                                    

  10.5     Contact      The telephone number  M                N        Text       Free text
           Voice        by which individuals                                       
           Telephone    can speak to the                                           
                        organization or                                            
                        individual                                                 

  10.7     Contact      The telephone number  O                N        Text       Free text
           Facsimile    of a facsimile                                             
           Telephone    machine of the                                             
                        organization or                                            
                        individual                                                 

  10.8     Contact      The address of the    O                N        Text       Free text
           Electronic   electronic mailbox of                                      
           Mail Address the organization or                                        
                        individual                                                 
  -------- ------------ --------------------- ---------------- -------- ---------- -------------------

**Annex G**

**(informative)**

**Diagram of governmental unit boundary dataset description
characteristics**

Annex G (informative) is a graphic depiction of the organization and
hierarchy of data elements and compound elements that define the
information content for a governmental unit boundary. All compound
elements are described by data elements; data elements are the primitive
items of data.

Governmental unit boundary data description characteristic components,
or GU Information, are presented in three sections: References, GU Type
Information and GU Instance Information. Subsections within each section
contain the compound elements and data elements, each of which have six
distinct characteristics as defined in 7.2.1: name, definition, domain
values, obligation/condition, maximum occurrence and data type.

This annex illustrates the GU Information nonspecifically, by name,
obligation, and maximum occurrence. The format for governmental unit
description begins with the most generalized compound element and moves
inward towards the more specific data elements. Both compound elements
and data elements may be excluded if the obligation/condition is
optional, or the conditions specified for the element are not met. Annex
G is to be used in conjunction with Annex H (informative), the tabular
depiction of the governmental unit boundary dataset description
characteristic components. The numbers in the lower right corner of the
data element depiction refers to its line number in Annex H. Repeatable
refers to the possible multiple occurrence of the element, described as
maximum occurrence in Annex H.

Figure G.1

![](media/image2.wmf){width="6.0in" height="8.5in"}

Figure G.2

![](media/image3.wmf){width="6.0in" height="8.752083333333333in"}

![](media/image3.wmf){width="6.0in" height="9.0in"} Figure G.3

Figure G.4

![](media/image4.wmf){width="6.0in" height="9.0in"}

Figure G.5

**Annex H**

**(informative)**

**Table of governmental unit boundary dataset description
characteristics**

Annex H (informative) describes the requisite information necessary to
exchange governmental unit and other legal entity boundary data.
Definitions for the terminology describing the characteristics of the
data are provided in 7.2.1.

To implement Annex H, one shall follow the line numbers in sequence and
consult the obligation/condition (O/C) to determine if the component is
mandatory (M), conditional (C) and its conditions are met, or if it is
optional (O). Once it is determined that the component is required for
governmental unit boundary documentation through its definition and
obligation/condition, refer to the domain which describes the valid
values that can be assigned to the data element. If the component is a
compound element, the domain will specify the lines of data elements to
include. If the component is a compound element, the line will be
shaded, the domain will specify the appropriate lines for the component,
and the data type will specify \'compound\'. For data elements the
characteristic data type describes the kind of value to be provided,
e.g. integer, real, text. The maximum occurrence (MO) will specify if
the element shall only be recorded one time (1) or if the element is
repeatable from one to many times (N).

  ------------- ---------------- ------------------------ --------------------- --------------- -------- -----------
  **Line \#**   **Name**         **Definition/Content**   **Domain**            **O/C**         **MO**   **Data
                                                                                                         Type**

  1             References       Relevant documentation   Lines 1.1 - 1.2.4     M               1        Compound
                                 to the GU dataset                                                       

  1.1           Metadata         Documentation that       Line 1.1.1            M               1        Compound
                                 describes the content,                                                  
                                 quality, condition, and                                                 
                                 other characteristics of                                                
                                 data                                                                    

  1.1.1         File Level FGDC  Metadata information for Annex D               M               1        Text/Real
                Metadata         the GU dataset as                                                       
                                 determined in the                                                       
                                 Standard                                                                

  1.2           Other Standards/ Standards and other      Lines 1.2.1 - 1.2.5   C- if other     N        Compound
                Documents        relevant documents                             standards or             
                                 referenced when                                documents are            
                                 documenting the GU                             used in GU               
                                 dataset                                        boundary                 
                                                                                documentation            

  1.2.1         Document Type    Description of the type  Standard, Document,   M               1        Text
                                 of document referenced   Free Text                                      

  1.2.2         Document Name    Name of document         Free Text             M               1        Text
                                 referenced                                                              

  1.2.3         Document Date    Date of document         Free Date             C - if date is  1        Real
                                 referenced                                     known                    

  1.2.4         Document Version Version number of        Free text             C - if version  1        Text
                                 document referenced                            is known                 

  2             GU Type          Information describing   Lines 1.1 - 1.3.1     M               1        Compound
                Information      the type of GU whose                                                    
                                 data are being described                                                

  2.1           GU Type          Specific identification  Lines 1.1.1 -1.1.4    M               1        Compound
                Identification   information describing                                                  
                                 the type of GU whose                                                    
                                 data are being described                                                

  2.1.1         GU Type Name     The designated name for  Terms in Section      M               1        Text
                                 the type of GU whose     4.1.1, Annex E, Annex                          
                                 data are being described F, Free Text                                   

  2.1.2         GU Type Name     The abbreviated name for Free Text             C - if an       1        Text
                Abbreviation     the type of GU whose                           abbreviation             
                                 data are being described                       exists for GU            
                                                                                Type Name                

  2.1.3         GU Type          Definition of the type   Definitions in        C - if the GU   1        Text
                Definition       of GU whose data are     Section 4.1.1, Annex  Type Name and            
                                 being described          E, Free Text          GU Type                  
                                                                                Definition are           
                                                                                known                    

  2.1.4         GU Coding System The coding system which  Lines 2.1.4.1 -       C - if a coding 1        Compound
                                 identifies the GU being  2.1.4.2               system exists            
                                 described                                                               

  2.1.4.1       GU Type Code     The specific code which  Free Number           C - if a type   N        Text/Real
                                 identifies the GU being                        code exists              
                                 described                                                               

  2.1.4.2       GU Coding System GU Type Code reference   FIPS Code, Free Text, M               1        Text/Real
                Reference        documentation            Free Number                                    

  2.2           GU Type          Information describing   Lines 2.2.1 - 2.2.2.3 C - if one or   1        Compound
                Relationship     one or more                                    more type                
                                 relationships the GU                           relationships            
                                 being described shares                         exist                    
                                 with other GUs                                                          

  2.2.1         GU Maintenance   Common areal information Lines 2.2.1.1 -       C - if one or   N        Compound
                Relationships    between one or more GUs  2.2.1.2               more                     
                                 or legal entities and                          maintenance              
                                 geographic area features                       relationships            
                                                                                exist for the            
                                                                                GU being                 
                                                                                documented               

  2.2.1.1       Maintenance List List of maintenance      Free Text             C - if a        N        Text
                                 relationships for the GU                       maintenance              
                                 type being described                           list exists              

  2.2.1.2       Maintenance List The maintenance          Free Text             M               N        Text
                Reference        relationship list                                                       
                                 reference document                                                      

  2.2.2         GU Topologic     Conditional or           Lines 2.2.2.1 -       C - if one or   1        Compound
                Relationships    characteristic           2.2.2.3               more topologic           
                                 relationships that apply                       relationships            
                                 to GUs and legal                               exist for the            
                                 entities                                       GU being                 
                                                                                documented               

  2.2.2.1       Contiguous       List of GUs or feature   Free Text             C - if one or   N        Text
                Relationship     objects that are either                        more contiguous          
                List             adjacent to one another,                       relationships            
                                 touch at a common point,                       exist                    
                                 or share a boundary                                                     

  2.2.2.2       Composed of      List of GUs or feature   Free Text             C - if one or   N        Text
                Relationship     objects that constitute                        more composed            
                List             the GU being documented                        of                       
                                                                                relationships            
                                                                                exist                    

  2.2.2.3       Composes         List of GUs of which the Free Text             C - if one or   N        Text
                Relationship     GU being documented                            more composes            
                List             always forms a part                            relationships            
                                                                                exist                    

  3             GU Instance      Single representation of Lines 3.1 - 3.2.3.3   M                N       Compound
                                 a GU feature                                                            

  3.1           GU Instance      Information describing   Lines 3.1.1 - 3.2.2.3 M               N        Compound
                Information      the single                                                              
                                 representation of the                                                   
                                 feature type, or                                                        
                                 specific GU documented                                                  

  3.1.1         GU Instance      Identification of the    Lines 3.1.1.1 -       M               1        Compound
                Identification   single representation of 3.1.6.2                                        
                                 the feature type, or                                                    
                                 specific GU described                                                   

  3.1.1.1       GU Instance Name Name of the GU instance  Free Text             M               1        Text

  3.1.1.2       GU Type Name     Reference to the GU type Line 2.1.1            M               1        Text
                Reference        name                                                                    

  3.1.1.3       Functional       Administrative or legal  nonfunctioning,       C - if          1        Text
                Status           activities associated    active, inactive      functional               
                                 with performing the                            status is known          
                                 legally prescribed                                                      
                                 functions of a                                                          
                                 governmental unit or                                                    
                                 legal entity                                                            

  3.1.1.4       GU Instance      Specific identifier      Lines 3.1.1.4.1 -     M               1        Compound
                Boundary ID      assigned to a GU         3.1.4.2                                        
                                 boundary instance                                                       

  3.1.1.4.1     Polygon ID       Unique identifier        Free text, Free       C - if boundary 1        Text/Real
                                 assigned to the boundary number                is expressed as          
                                 polygon                                        a polygon                

  3.1.1.4.2     CurveSegID       Unique identifier        Free text, Free       C - if boundary 1        Text/Real
                                 assigned to the boundary number                is expressed as          
                                 curve segment                                  curve segments           

  3.1.1.5       Legal Area       Description of the legal Free text             C - if legal    1        Text
                Description      area, a geographic area                        area                     
                                 whose boundaries, name,                        description is           
                                 origin, and                                    known                    
                                 legal/statistical area                                                  
                                 description result from                                                 
                                 charters, laws,                                                         
                                 treaties, or other                                                      
                                 administrative or                                                       
                                 governmental action                                                     

  3.1.1.5.1     County           County as defined in     Free text             C - if the GU   1        Text
                                 Annex E                                        being                    
                                                                                documented is a          
                                                                                county                   

  3.1.1.5.2     City/ Town/      City, Town, and Village, Free text             C - if the GU   1        Text
                Village          as defined in Annex E                          being                    
                                                                                documented is a          
                                                                                city, town, or           
                                                                                village                  

  3.1.1.5.3     Other Locality   Those locations that are Free text             C - if the GU   1        Text
                Name             not County, City, Town,                        being described          
                                 or Village, as defined                         is not a                 
                                 in Annex E or other                            county, city,            
                                 locality name                                  town, or                 
                                                                                village                  

  3.1.1.6       GU Code          Information describing   Lines 3.1.1.6.1 -     C- if a GU code 1        Compound
                Information      GU Type Code and GU      3.1.1.6.2             exists                   
                                 Instance Code                                                           

  3.1.1.6.1     GU Instance Code Specific code which      Free text, Free       C - if an       1        Text/Real
                                 identifies the GU        number                instance code            
                                 instance being described                       exists                   

  3.1.1.6.2     GU Coding System GU Type Code reference   Line 2.1.4.2          M               1        Compound
                Reference                                                                                

  3.1.1.7       Boundary         A term or phrase which   Free text             C - if one or   N        Text
                Classifier       describes the status of                        more boundary            
                                 the boundary                                   classifiers              
                                                                                exist                    

  3.1.2         GU Instance      Information about one or Lines 3.1.2.1 -       M               N        Compound
                Relationship     more relationships the   3.1.2.2.3                                      
                                 GU being described                                                      
                                 shares with other GUs                                                   

  3.1.2.1       GU Instance      Common areal information Lines 3.1.2.1.1 -     C - if one or   N        Compound
                Maintenance      between the described GU 3.1.2.2.3             more                     
                Relationships    entity and geographic                          maintenance              
                                 area features                                  relationships            
                                                                                exist                    

  3.1.2.1.1     Maintenance      Name of the referenced   Free Text             M               N        Text
                Relationship     maintenance relationship                                                
                Name                                                                                     

  3.1.2.2       GU Topologic     Conditional or           Lines                 C - if one or   N        Compound
                Relationships    characteristic           3.1.2.2.1-3.1.2.2.3   more                     
                                 relationships that apply                       topological              
                                 to the specific GUs                            relationships            
                                 being described                                exist                    

  3.1.2.2.1     Contiguous       List of GUs or feature   Line 2.2.2.1, free    C - if one or   N        Text
                Relationship     objects that share a     text                  more contiguous          
                List             common point or portion                        relationships            
                                 of a boundary                                  exist                    

  3.1.2.2.2     Composed of      List of GUs or feature   Line 2.2.2.2, free    C - if one or   N        Text
                Relationship     objects that contains    text                  more composed            
                List             subentities that are                           of                       
                                 completely within and                          relationships            
                                 are the extent of the                          exist                    
                                 entity                                                                  

  3.1.2.2.3     Composes         List of GU subentities   Line 2.2.2.3, free    C - if one or   N        Text
                Relationship     that are completely      text                  more composes            
                List             contained within an                            relationships            
                                 entity                                         exist                    

  3.2           Boundary         Information describing   Lines 3.2.1-3.2.3.3   M               N        Compound
                Instance         the specific GU boundary                                                
                Coordinate       being described                                                         
                Information                                                                              

  3.2.1         Polygon          Set of line segments     Lines 3.2.1.1-3.2.1.3 C-if the        N        Compound
                                 that define a GU                               delineation of           
                                 boundary being described                       the GU boundary          
                                                                                file consists            
                                                                                of polygons              

  3.2.1.1       Polygon ID       Identification for the   Free Text, Free       M               1        Text/Real
                                 polygon                  Number                                         

  3.2.1.2       Single Curve     Set of coordinates with  Lines 3.2.1.2.1 -     C - if the      N        Compound
                Coordinate Set   no repetition that       3.2.1.2.3.1           polygon                  
                                 define a curve                                 consists of a            
                                                                                single curve             

  3.2.1.2.1     Start Point      First point of a curve   Line 3.2.1.2.1.1      M               1        Compound

  3.2.1.2.1.1   Coordinates      Sequence of numbers      Line 3.2.3            M               1        Compound
                                 designating the position                                                
                                 of a point                                                              

  3.2.1.2.2     End Point        Last point of a curve    Line 3.2.1.2.2.1      M               1        Compound

  3.2.1.2.2.1   Coordinates      Sequence of numbers      Line 3.2.3            M               1        Compound
                                 designating the position                                                
                                 of a point                                                              

  3.2.1.2.3     Intermediate     Point on a curve         Line 3.2.1.2.3.1      C - if one or   N        Compound
                Point                                                           more                     
                                                                                intermediate             
                                                                                points exist             

  3.2.1.2.3.1   Coordinates      Sequence of numbers      Line 3.2.3            M               1        Compound
                                 designating the position                                                
                                 of a point                                                              

  3.2.1.3       Multiple Curves  Collection of            Lines 3.2.1.3.1 -     C-if the        N        Compound
                Coordinate Set   coordinates with no      3.2.1.3.3.1           polygon                  
                                 repetition that define                         consists of              
                                 more than one curve                            multiple curves          

  3.2.1.3.1     Start Point      First point of a curve   Line 3.2.1.3.1.1      M               1        Compound

  3.2.1.3.1.1   Coordinates      Sequence of numbers      Line 3.2.3            M               1        Compound
                                 designating the position                                                
                                 of a point                                                              

  3.2.1.3.2     End Point        Last point of a curve    Line 3.2.1.3.2.1      M               1        Compound

  3.2.1.3.2.1   Coordinates      Sequence of numbers      Line 3.2.3            M               1        Compound
                                 designating the position                                                
                                 of a point                                                              

  3.2.1.3.3     Intermediate     Point on a curve         Line 3.2.1.3.3.1      C - if one or   N        Compound
                Point                                                           more                     
                                                                                intermediate             
                                                                                points exist             

  3.2.1.3.3.1   Coordinates      Sequence of numbers      Line 3.2.3            M               1        Compound
                                 designating the position                                                
                                 of a point                                                              

  3.2.2         Curve Segment    Homogenous segment of a  Lines 3.2.2.1         C - if the GU   N        Compound
                                 curve                    -3.2.2.2.3.1          consists of              
                                                                                curve segments           

  3.2.2.1       CurveSegID       Identification of the    Free Text, Free       M               1        Text/Real
                                 curve segment            Number                                         

  3.2.2.2       Curve Segment    Sequences of numbers     Lines 3.2.1.2.1 -     M               N        Real
                Coordinate Set   designating the          3.2.2.2.3.1                                    
                                 positions of points                                                     

  3.2.2.2.1     Start Point      First point of a curve   Line 3.2.2.2.1.1      M               1        Compound

  3.2.2.2.1.1   Coordinates      Sequence of numbers      Line 3.2.3            M               1        Compound
                                 designating the position                                                
                                 of a point                                                              

  3.2.2.2.2     End Point        Last point of a curve    Line 3.2.2.2.2.1      M               1        Compound

  3.2.2.2.2.1   Coordinates      Sequence of numbers      Line 3.2.3            M               1        Compound
                                 designating the position                                                
                                 of a point                                                              

  3.2.2.2.3     Intermediate     Point on a curve         Line 3.2.2.2.3.1      C - if one or   N        Compound
                Point                                                           more                     
                                                                                intermediate             
                                                                                points exist             

  3.2.2.2.3.1   Coordinates      Sequence of numbers      Line 3.2.3            M               1        Compound
                                 designating the position                                                
                                 of a point                                                              

  3.2.3         Coordinates      Sequence of numbers      Lines 3.2.3.1-3.2.3.3 M               N        Compound
                                 designating the position                                                
                                 of a point                                                              

  3.2.3.1       X                Latitude Coordinate      Free Number           M               1        Real

  3.2.3.2       Y                Longitude Coordinate     Free Number           M               1        Real

  3.2.3.3       Z                Altitude Coordinate      Free Number           O               1        Real
  ------------- ---------------- ------------------------ --------------------- --------------- -------- -----------

**Annex I**

**(informative)**

**Referenced publications**

U.S. Government. Office of Management and Budget. *Circular A-16*. 2002.

**Annex J**

## (informative)

**UML Notations**

## 

## J.1 UML notations

The diagram that appears in Annex A (normative) of this standard is
presented using the Unified Modeling Language (UML) static structure
diagram with the ISO Interface Definition Language (IDL) basic type
definitions and the UML Object Constraint Language (OCL) as the
conceptual schema language. The UML notations used in this standard are
described in Figures J.1 and J.2.

![](media/image5.wmf)

Figure J.1 

## J.2 UML model relationships

### J.2.1 Associations

An association is used to describe a relationship between two or more
classes. UML defines three different types of relationships, called
association, aggregation and composition. The three types have different
semantics. An ordinary association shall be used to represent a general
relationship between two classes. The aggregation and composition
associations shall be used to create part-whole relationships between
two classes. The direction of an association must be specified. If the
direction is not specified, it is assumed to be a two-way association.
If one-way associations are intended, the direction of the association
can be marked by an arrow at the end of the line.

An aggregation association is a relationship between two classes in
which one of the classes plays the role of container and the other plays
the role of a containee.

A composition association is a strong aggregation. In a composition
association, if a container object is deleted, then all of its containee
objects are deleted as well. The composition association shall be used
when the objects representing the parts of a container object cannot
exist without the container object.

### J.2.2 Generalization

A generalization is a relationship between a superclass and the
subclasses that may be substituted for it. The super-class is the
generalized class, while the subclasses are specified classes.

### J.2.3 Instantiation / Dependency

A dependency relationship shows that the client class depends on the
supplier class/interface to provide certain services, such as:

-   Client class accesses a value (constant or variable) defined in the
    supplier class/interface;

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-   Operations of the client class invoke operations of the supplier
    class/interface;

-   Operations of the client class have signatures whose return class or
    arguments are instances of the supplier class/interface.

An instantiated relationship represents the act of substituting actual
values for the parameters of a parameterized class or parameterized
class utility to create a specialized version of the more general item.

### J.2.4 Roles

If an association is navigable in a particular direction, the model
shall supply a "role name" that is appropriate for the role of the
target object in relation to the source object. Thus in a two-way
association, two role names will be supplied.

![](media/image6.wmf)

Figure J.2

Figure J.2 represents how role names and cardinalities are expressed in
UML diagrams. The role name "r1"' is Class1's relationship to Class2.
The role name "r2" is Class2's relationship to Class1. The cardinalities
show that "zero or many" Class1s are related to "exactly one" Class2.

Figure J.2 also shows how derived classes will be expressed. The diagram
indicates that Class1 is a derived class of Class2. Any attributes and
aggregates of Class1 are also derived from Class2.

## J.3 UML model stereotypes

A UML stereotype is an extension mechanism for existing UML concepts. It
is a model element that is used to classify (or mark) other UML elements
so that they in some respect behave as if they were instances of new
virtual or pseudo metamodel classes whose form is based on existing base
metamodel classes. Stereotypes augment the classification mechanisms on
the basis of the built-in UML metamodel class hierarchy. Below are brief
descriptions of the stereotypes used in this Standard:

a)  \<\<DataType\>\> descriptor of a set of values that lack identity
    (independent existence and the possibility of side effects). Data
    types include primitive predefined types and user-definable types. A
    DataType is thus a class with few or no operations whose primary
    purpose is to hold the abstract state of another class.

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a)  \<\<CodeList\>\> used to describe a more open enumeration.
    \<\<CodeList\>\> is a flexible enumeration. Code lists are useful
    for expressing a long list of potential values. If the elements of
    the list are completely known, an enumeration should be used; if the
    only likely values of the elements are known, a code list should be
    used.

b)  \<\<Abstract\>\> class (or other classifier) that cannot be directly
    instantiated. UML notation for this to show the name in italics.

c)  \<\<Package\>\> cluster of logically related components, containing
    sub-packages.

e\) \<\<Leaf\>\> package that contains definitions, without any
sub-packages.

[^1]: ANSI X3.31 (Federal Information Processing Standard (FIPS)
    Publication 55-3) defines a governmental unit as, \"A legally
    bounded geographic entity that has the ability to have elected or
    appointed officials and raise revenues through taxes.\"