Personalized Query System Based on Heterogeneous Data Sources

From the high degree of autonomy, heterogeneous and dynamic changes in the data source, How to provide users with high-quality, personal data query service gradually become a hotspot. The key on personalized query service for users based on query heterogeneous data sources is to the effective integration of heterogeneous data sources and to deal with heterogeneous data sources related to the process of joint inquiry related properties. The paper first proposed a new WCF-based heterogeneous data integration solutions, using WCF in the advantages of heterogeneous data integration, The solution designs global dictionary tree and field mapping tree, and effectively solve the most difficult problem of semantic heterogeneity in heterogeneous data integration, and on this basis, proposed personalized user database based on global dictionary tree, the applications of enterprise demonstrate the effectiveness of the method.