Class Name: Keywords

Superclass - SEDRIS Abstract Base

Definition

A collection of words or phrases identifying the real-world object represented by the containing SEDRIS object, or identifying the spatial location and/or time period represented by the containing SEDRIS object.

Primary Page in DRM Diagram:

• 1

Secondary Pages in DRM Diagram:

• 2
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• 6
• 8
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Example

1. For a transmittal containing features, keywords might include NIMA VPF product names (e.g. DTOP, FFD), the names of the thematic coverages that are included (e.g. transportation, industry), and the names of particular types of features that are included (e.g. roads, railroads, airfields, etc.)

2. For a Model of an aircraft, the specific type of the aircraft (e.g. F-16C).

FAQs

What is the purpose of this class?

This class provides for FGDC-compatible keywords, which can be used to search a repository (such as MEL) for SEDRIS transmittals that address specified real-world objects, spatial locations, or time periods. This allows a potential user to identify and select those SEDRIS transmittals that meet their requirements, without having to actually obtain and examine the transmittals themselves.

Constraints

• Mandatory Metadata

Component of (one-way)

• optionally, some Attribute Sets
• optionally, some Attribute Set Tables
• optionally, some Attribute Set Table Groups
• optionally, some Environment Roots
• optionally, some Color Tables
• optionally, some Color Table Groups
• optionally, some Data Tables
• optionally, some Features
• optionally, some Feature Models
• optionally, some Geometry Hierarchies
• optionally, some Geometry Models
• optionally, some Images
• optionally, some Libraries
• optionally, some Models
• optionally, some Sounds
• optionally, some Symbols
• optionally, a Transmittal Root

Field Elements

Notes

Fields Notes

keywords

 multiple words are separated by a semi-colon (';')