I. Descriptive Elements

title

title.alternate

creator

creator.employee

creator.organization

creator.code

creator.contract

creator.missionsProjects

creator.instrument

contributor

contributor.employee

contributor.organization

contributor.code

contributor.contract

contributor.missionsProjects

contributor.instrument

subject

subject.employee

subject.organization

subject.missionsProjects

subject.disciplines

subject.instrument

subject.functions

subject.industries

subject.uncontrolled

description

date

date.created

date.available

date.modified

publisher

publisher.organization

type

type.information

type.contentInvariance

format

format.medium

identifier

source

language

relation.hasVersion

coverage.spatial

coverage.chronology

coverage.projectPhase

rights

rights.resourceAvailability

audience

The **Title** element contains the canonical name within the archive of
the work of which the Identifier identifies one expression.

The **Title.alternate** element contains other ways of identifying the
work of which the identifier identifies one expression than that given
in the Title element.

The **Creator** element contains the name of a generic entity that
participated in the creation or development of a work.

The **Creator.employee** element contains the name of a creator or
developer of the work of which the identifier identifies one expression.

The **Creator.code** element contains a Goddard organizational code
under which the work originated in whole or in part.

The **Creator.contract** element contains a value that identifies a
contract under which the work originated in whole or in part.

The **Creator.project** element contains a value that identifies a
project under which the work originated in whole or in part.

The **Creator.organization** element contains a value that identifies an
organization under whose auspices the work was produced in whole or in
part.

The **Creator.instrument** element contains a value that identifies a
piece of equipment to which the work pertains.

The **Contributor** element contains the name of a generic entity that
made changes or additions incorporated into this version.

The **Contributor.employee** element contains the name of a person who
made changes or additions incorporated into this version.

The **Contributor.code** element contains a Goddard organizational code
under which changes or additions incorporated in this version were made.

The **Contributor.contract** element contains a value that identifies a
contract under which changes or additions incorporated into this version
were made.

The **Contributor.project** element contains a value that identifies a
project under which changes or revisions incorporated in this version
were made.

The **Contributor.organization** element contains a value that
identifies the organization under whose auspices changes or revisions
incorporated in this version were made.

The **Contributor.instrument** element contains a value that identifies
a piece of equipment used in the generation of changes or additions to
this version.

The **Subject** element contains the name of a generic entity that the
content is about.

The **Subject.employee** element contains the name of an employee whom
the content of the expression is about.

The **Subject.organization** element contains the name of an
organization that the content of the expression is about.

The **Subject.missionsProjects** element contains the name of a project
that the content of the expression is about.

The **Subject.disciplines** element contains the name of a discipline
that the content of the expression is about.

The **Subject.instrument** element contains the name of an instrument
that the content of the expression is about.

The **Subject.functions** element contains the name of a business
function that the content of the expression is about.

The **Subject.industries** element contains the name of an industry that
the content of the expression is about.

The **Subject.uncontrolled** element contains a characterization of the
subject matter of the expression.

The **Description** element contains information useful in evaluating
the relevance of the expression to the user\'s need. This information
includes "abstracts, table(s) of contents, reference to a graphical
representation of content or a free-text account of the content".

The **Date.created** element is used in the Goddard Core to identify the
date at which the particular expression referred to by the Identifier
was created in some manifestation.

The **Date.available** element is used in the Goddard Core to identify
the date at which the expression referred to by the Identifier was made
widely available.

The **Publisher.organization** element contains the name of an
organization responsible for producing and/or distributing a
manifestation of the expression.

The **Type.information** element contains an indication of the
intellectual genre of the work of which the object specified in the
Identifier element is an expression, taken from a taxonomy of content
types.

The **Type.contentInvariance** is imported from the National Library of
Medicine's permanence ratings and contains one of the following values:
Dynamic, Stable, Unchanging.

The **Format** element contains the mime type of the object.

The **Format.medium** element contains the name(s) of the medium(s) on
which items of the expression specified by the Identifier element exist.

The **Identifier** element contains a persistent identifier that
resolves to physical and/or virtual locations of all known items of a
unique expression.

The **Source** element contains the title of a work within which the
expression is found.

The **Language** element contains the name of the language in which the
expression is expressed.

Each **Relation.hasVersion** element contains a persistent identifier
that resolves to physical and/or virtual locations of all known items of
one expression that is derived from the same work as the expression
specified in the Identifier element.

The **Coverage.temporal** element specifies a project phase to which the
content of the object is relevant.

The **Coverage.chronology** element specifies the period in which the
expression was generated.

The **Coverage.spatial** element specifies an area covered by the
content of the object

The **Rights** element contains a formal statement of copyright and
access controls that apply to the expression identified in the
Identifier element. These do not include idiosyncratic restrictions
imposed by individual repositories in which manifestations of the
expression may exist.

The **Rights.resourceAvailability** is imported from the National
Library of Medicine's permanence ratings and contains one of the
following values: No Guarantee, Permanently Available.

The **Audience** element contains a designator of a group by whom the
expression is intended to be used.

II. Administrative Elements

date.recordCreated

creator.recordCreator

contributor.rno

contributor.contentowner

contributor.webmaster

The **date.recordCreated** element contains the date that this metadata
record was created.

The **creator.recordCreator** element contains an indicator of an entity
that created this record.

The **Contributor.rno** -- this tag is intended for use with web pages,
and reflects the rno tag required by Goddard web policy as of May 2003.
It contains the name of the NASA official who is responsible for the
content of the object.

The **Contributor.contentOwner** -- this tag is intended for use with
web pages, and reflects the content-owner tag required by Goddard web
policy as of May 2003. It contains the name of the owner of the content
that is pointed to by record.

The **Contributor.webmaster -** this tag is intended for use with web
pages, and reflects the webmaster tag required by Goddard web policy as
of May 2003.