Table 6.104—DRM_Feature_Topology_Hierarchy

Property

Description

Superclass

·         <DRM SEDRIS Abstract Base>

Class

·         <DRM Feature Topology Hierarchy>

Subclass

·         <DRM Perimeter Related Feature Topology>

·         <DRM Spatial Index Related Feature Topology>

·         <DRM Union of Feature Topology>

Definition

This is an abstract DRM class that specifies a spatially organized hierarchical collection of <DRM Feature Topology> instances, which includes all of the <DRM Feature Topology> instances that lie within a defined spatial extent, and are components of a single <DRM Aggregate Feature>.

Example(s)

·         The set of all <DRM Feature Topology> instances contained within an independent topological surface, organized into a collection of regularly or irregularly shaped tiles.

Inherited field elements

field_name

range

Field_Data_Type

none

 

 

Field elements

field_name

range

Field_Data_Type

feature_topology_level1

 

Feature_Topology_Level

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)

·         none

Composed of (two-way) (inherited)

·         none

Composed of (two-way)

·         none

Composed of (two-way metadata) (inherited)

·         none

Composed of (two-way metadata)

·         none

Component of (two-way) (inherited)

·         none

Component of (two-way)

·         zero or more <DRM Aggregate Feature>s

Constraints

·         none

Notes

none

Class diagram

<DRM Feature Topology Hierarchy>