Study on virtual database architecture of data integration

The data integration is regarded as one of effective ways on information resource sharing and is used for data mining,the knowledge discover as well as to provide transparent data accessing service using development.The data integration system based on virtual database realizes management on metadata from various heterogeneous data source intensively and data sharing among multi-data source.The system uses classified packing data resource to unify visit interface of data resource and to realize data source plug and play. Semantics conflict is resolved by knowledge division based on domain and structure conflict is resolved by establishing data model of subject knowledge source.The system is confirmed rationality under demonstration project the Shanxi Province science and technology foundation condition platform construction. Expert information resource sharing,rationalization dis-tribution and effective utilization are realized.