A specific geographic unit of a defined Unit Type. A geographic unit may change its name, composition, or geographic extent over time. This may be tracked by versioning the content of the geographic unit. Normally a new version of a geographic unit would have a geographic (spatial) overlap with its previous version (a city annexing new area). A geographic unit ends when it is no longer a unit of the same unit type.
Name | Cardinality | Datatype | Description |
---|---|---|---|
geographicTime | 0..1 | The period for which the Geographic Unit is valid. Note that the geographic extent, name, or composition change within the valid period of this unit. | |
supercedes | 0..n | The Geographic Unit supercedes (follows immediately in time) the described geographic unit. Repeat for multiple geographic units. | |
precedes | 0..n | The Geographic Unit is superceded by (precedes immediately in time) the described geographic unit. Repeat for multiple geographic units. |
Name | Target Object | Description | Source cardinality | Target cardinality | Relationship type |
---|---|---|---|---|---|
hasGeographicExtent | Describes the geographic extent or coverage of the geographic unit during the specified period of time. | 0..n | 0..n | Neither |