Table 6.192—DRM_Perimeter_Related_Feature_Topology

Property

Description

Superclass

· <DRM Feature Topology Hierarchy>

Class

· <DRM Perimeter Related Feature Topology>

Subclass

· none

Definition

This DRM class specifies a <DRM Feature Topology Hierarchy> that spatially organizes its components into a collection of (potentially) irregularly shaped regions, each defined by a <DRM Perimeter Data> object.

Example(s)

· The geographic extent of a thematic coverage might be divided up into a collection of tiles. Due to political boundaries or shorelines, some of these tiles might have irregular shapes. The <DRM Feature Topology> objects contained within each tile would be organized into one of the components of a <DRM Perimeter Related Feature Topology> object.

Inherited field elements

field_name	range	Field_Data_Type
feature_topology_level		Feature_Topology_Level

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)

· none

Composed of (two-way) (inherited)

· none

Composed of (two-way)

· one or more <DRM Union Of Feature Topology> through <DRM Perimeter Data>

Composed of (two-way metadata) (inherited)

· none

Composed of (two-way metadata)

· none

Component of (two-way) (inherited)

· zero or more <DRM Aggregate Feature>s

Component of (two-way)

· none

Constraints

· Distinct link objects

· Perimeter related organizing principle

Notes

none

Class diagram

<DRM Perimeter Related Feature Topology>