SDB101 » Abstraction Levels
 
Spatial databases support two different levels of abstractions:
  • Modeling a single conceptual object: 
    • city, river and road
  • Modeling a collection of objects:
    • Coverage/partitions: administrative boundaries
    • Network: transportation networks
    • Aggregation: counties->states->country
    • Terrain digital models

Última modificación: Tuesday, 8 de November de 2005, 06:52