GLOBAL DATABASE MANAGEMENT SYSTEM INTEGRATING HETEROGENEOUS DATA RESOURCES

摘要

A database management system is disclosed for solving distributed queriesacross a range of resources. In known systems, database retrieval frommultiple sources suffers from problems of reconciliation of data betweenresources and resource or data incompatibility. The invention allows fulldatabase integration even in the case where a database includes a plurality ofdisparate database resources having differing ontologies (data structures).The system has an ontology server which is used to store the ontologies ofvarious database resources and the query engine is designed to consult theserver so that it can construct a query that will operate effectively acrossthe disparate database resources.