Table 6.92—DRM_Feature

Property

Description

Superclass

·         <DRM SEDRIS Abstract Base>

Class

·         <DRM Feature>

Subclass

·         <DRM Feature Hierarchy>

·         <DRM Primitive Feature>

Definition

This is an abstract DRM class that specifies an abstract representation of a real-world geographic entity or a hierarchical collection of such geographic entities.

Example(s)

·         A wide variety of geographic entities, including roads, railroads, streams, rivers, lakes, bridges, buildings, built-up areas, forests, fields, political boundaries, power lines, airfields, etc. can be abstractly represented as <DRM Feature>s. <DRM Feature>s may be organized into thematic layers, each forming a separate topological surface.

Inherited field elements

field_name

range

Field_Data_Type

none

 

 

Field elements

field_name

range

Field_Data_Type

none

 

 

Associated to (one-way) (inherited)

·         none

Associated to (one-way)

·         none

Associated by (one-way) (inherited)

·         none

Associated by (one-way)

·         none

Associated with (two-way) (inherited)

·         none

Associated with (two-way)

·         zero or more <DRM Feature>s

·         zero or more <DRM Geometry Hierarchy>s

·         zero or more <DRM Property Grid>s

Composed of (two-way) (inherited)

·         none

Composed of (two-way)

·         zero or more {ordered} <DRM Attribute Set Index>s

·         zero or one <DRM Classification Data>

·         zero or more <DRM Label>s

·         zero or one <DRM Point Of Contact>

·         zero or more <DRM Property Table>s

·         zero or more <DRM Property Table Reference>s

·         zero or more <DRM Property Value>s

·         zero or one <DRM Rendering Priority Level>

·         zero or one <DRM Time Constraints Data>

Composed of (two-way metadata) (inherited)

·         none

Composed of (two-way metadata)

·         zero or one <DRM Access>

·         zero or more <DRM Browse Media>s

·         zero or one <DRM Citation>

·         zero or more <DRM Cross Reference>s

·         zero or one <DRM Data Quality>

·         zero or one <DRM Description>

·         zero or one <DRM Keywords>

·         zero or one <DRM Point Of Contact>

Component of (two-way) (inherited)

·         none

Component of (two-way)

·         zero or more <DRM Union of Features>

Constraints

·         No attribute conflicts

·         Non-crossing aggregations

·         Non-crossing associations

·         Precedence of Attribute_Set_Index

Notes

none

Class diagram

<DRM Feature>