Class Name: Perimeter Related Feature Topology

Superclass - Topology Hierarchy

Definition

A Topology Hierarchy that spatially organizes its components into a collection of (potentially) irregularly shaped regions, each defined by a Feature Topology Perimeter Data object.

Primary Page in DRM Diagram:

• 11

Example

1. 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 Feature Topology objects contained within each tile would be organized into one of the components of a Perimeter Related Feature Topology object.

FAQs

May the regions defined by the components of a Perimeter Related Feature Topology object overlap?

No. The regions defined by the components of a Perimeter Related Feature Topology object should fully partition the topological surface.

May the same Feature Topology object be contained within more than one of the components of a Perimeter Related Feature Topology object?

No. The organization of Feature Topology objects is strict, such that each Feature Topology object must be located within the region defined by a single component.

Does each of the components of a Perimeter Related Feature Topology object form an independent topological surface?

Normally, yes.

Constraints

• Distinct Link Objects
• Perimeter Related Feature Topology Partitioning

Composed of (two-way)

• one or more Union of Feature Topologies through Feature Topology Perimeter Data

Component of (two-way)(inherited)

• one or more Aggregate Features