Study and application of oriented-topology geospatial data model

Based on the analysis of spatial data model,this paper put forward a orient-topology geospatial data model.The geometry information and topology information of an entity were connected in this model.The advantages are a strong ability for spatial representation,to support the integrative data production for GIS and mapping and being able to maintain the geometry,attribute and topological consistency for spatial data in real time.This model could improve the quality and efficiency availably.