Table 6.285 — DRM_Union_Of_Feature_Topology

Property

Description

Class
  • <DRM Union Of Feature Topology>

Superclass

Subclass
  • None.

Definition

An instance of this DRM class is a collection of all of the <DRM Feature Topology> instances that form a complete topological surface.

Class diagram

Figure 6.343 — DRM_Union_Of_Feature_Topology

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)

Composed of (two-way metadata) (inherited)
  • None.

Composed of (two-way metadata)
  • None.

Component of (two-way) (inherited)

Component of (two-way)

Constraints

Clarifications

  

Example(s)

  • A thematic layer representing a transportation network might be broken up into 4 rectangular tiles. While the <DRM Linear Feature> instances representing roads are allowed to extend across the tile boundaries, the <DRM Feature Topology> instances that are located within each tile are organized into separate <DRM Union Of Feature Topology> instances to support access by spatial location.