Spatial Data Integration and Conflicts Resolving Approaches

In order to fully utilize the existing geospatial data resource, reduce the building costs and complexities of GIS project, two kinds of spatial data materialized and virtual integration approaches are contrastively analyzed. The conflicts between spatial databases and the corresponding harmonizing technologies are discussed and explained. As viewed from the current application and research status, the data warehouse approach is feasible and widely used, and the approach based on Mediator/Wrapper is the research hotspot. Comparatively speaking, the automated detection and harmonization of semantic conflicts is the more difficult problem during spatial data integration and still needs the further research and survey.