Table 6.308—DRM_Union_Of_Feature_Topology
Property |
Description |
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Superclass |
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Class |
· <DRM Union Of Feature Topology> |
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Subclass |
· none |
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Definition |
An object of this DRM class specifies a collection of all of the <DRM Feature Topology> objects that form a complete topological surface. |
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Example(s) |
· A thematic layer representing a transportation network might be broken up into 4 rectangular tiles. While the <DRM Linear Feature>s representing roads are allowed to extend across the tile boundaries, the <DRM Feature Topology> objects that are located within each tile are organized into separate <DRM Union Of Feature Topology> objects to support access by geographic location. |
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Inherited field elements |
|
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Field elements |
|
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Associated to (one-way) (inherited) |
· none |
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Associated to (one-way) |
· none |
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Associated by (one-way) (inherited) |
· none |
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Associated by (one-way) |
· none |
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Associated with (two-way) (inherited) |
· none |
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Associated with (two-way) |
· none |
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Composed of (two-way) (inherited) |
· none |
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Composed of (two-way) |
· one or more <DRM Feature Topology>s |
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Composed of (two-way metadata) (inherited) |
· none |
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Composed of (two-way metadata) |
· none |
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Component of (two-way) (inherited) |
· zero or more <DRM Aggregate Feature>s |
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Component of (two-way) |
· zero or one <DRM Perimeter Related Feature Topology> through <DRM Perimeter Data> · zero or one <DRM Spatial Index Related Feature Topology> through <DRM Spatial Index Data> |
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Constraints |
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Notes |
none |
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Class diagram |