Research on the Mapping Rules of Building Geo-ontology Based on Geodatabase

Geo-ontology has great of Significance in addressing the knowledgeable heterogeneity of geodatabases due to lack of semantic association, achieving information share and interoperation of the GIS data. It will greatly reduce the workload of building a Geo-ontology by building Geo-ontology automatically based-on geodatabase, and the sticking point is defined the mapping rules from geodatabase to Geo-ontology in this process. Firstly, this article researches the mapping rules from the relational database to ontology, compares and analyzes the difference of mapping methods; and then drawn the semantic mapping rules from geodatabase to Geo-ontology; finally, builds the Geo-ontology.