### message | information:

Database
* Introduces the concepts and techniques of database systems.
* Many databases allow textwords to be searched together as phrases with an adjacency command
  - require a username and password to read or write data
* Many databases use indexing
  - passwords
* Most databases contain human knowledge
  - use controlled vocabulary to organize records
* Some databases are bibliographic, providing citations to published documents
  - catalogs of items owned in a particular place such as a library
  - describe epidemiology
* Some databases use cookies to help keep track of log ons and searches
  - keep track of log-ons and searches
* Use bibliographic databases to search for relevant journal articles.
* act as electronic indexes to articles from magazines, journals and newspapers.
* allow for information to dynamically change based on user preferences
  - the management and processing of large amounts of data
  - information to be stored and manipulated easily
  - users to search stored information in a variety of ways
* also differ in the kinds of material they index.
* are a key component in instrumentation
  - part of everyday life for many people
  - an example of concepts that typically expand as they evolve
* are an important part of the Internet
  - way of organizing and analyzing large amount of information
  - collections of information and citations online
  - crucial tools for computer-aided software engineering
  - currently the dominant application for large computer systems
  - electronic repositories of information
  - equivalent to catalogs whose creation is implementation-defined
  - files
  - giant warehouses of information
  - ideal for information that is defined and categorized
  - important resources for sequence analysis and research
  - indexes to the articles in journals
* are like catalogs for articles
  - file folders, and inside the folders are records
  - lists of information
  - often computerised versions of printed indexes
  - one of the tools that libraries use to keep track of published information
  - organised collections of information or records in computer format
* are organized collections of information
  - related data
  - lists of facts and information
  - probably one of the most common and fundamental types of software
  - programs that contain information that can be searched according to various criteria
  - simple text files
  - storehouses for large amounts of information
* are the banks that hold the currency of information
  - core of all business information systems
  - driving force behind e-commerce
  - electronic replacement for traditional filing and record keeping systems
  - foundations of systems
* are the ideal format for inputting, storing, searching and retrieving information
  - way to store and retrieve information over the Web
  - most vital part of the Internet
  - repositories of data that drive e-commerce applications
  - textual counterparts of spreadsheet programs
* base on versions.
* can act as the intermediary between multiple agents
  - move transparently between operating systems and computer architectures
  - operate through automated files, libraries, or computer disks
  - store tremendous amounts of data arranged in a bewildering array of tables and fields
  - transmit films, news, books and photos
* collect, sort, and present information according to fields.
* come from different sources.
* come from several different sources
* consist of data, stored in a data structure
  - lists of indexed and searchable items
  - varying numbers of different types of records
* constitute one of the key technologies that is spearheading the Information Revolution.
* contain ecological information
  - financial information
  - full text
  - results
  - summaries
  - taxonomic information
  - the information that is used to analyze and determine a solution to a problem
* cover electronic indexes that are purchased each year.
* differ from Internet sites in content, organization, and appearance
  - in the kinds of information that they include
* essentially are tools that allow the storage and retrieval of information.
* gateways help programs read and write to remote databases or files.
* have differences
  - ranges
  - significant amounts of stored data
* include detail information
  - maps
  - topics
* look like rows and columns, but a Web site network.
* make it easier to store and organize large amounts of information
  - possible to store large amounts of data and retrieve it quickly
* manage information.
* manages and manipulates a collection of data.
* match human and mouse genes.
* offer an orderly means for storing data.
* often have their own scripting environments or languages that are pretty powerful.
* organize information efficiently.
* play an ever increasing, and critical, role in almost all areas where computers are used
  - important role in identifying unknown compounds
* present an orderly means for storing, defining, and drawing relationships between, data.
* provide a way of organizing, finding, and analyzing information
  - citation databases
  - development
  - suggestions
  - useful information
  - valuable resources
* range from millions to trillions of bytes of data.
* use booleans logic to link words and phrases and combine terms
  - different symbols to truncate words
  - for applications
* usually are the product of some professional society, interest group or government agency.