Title :
An intelligent heterogeneous autonomous database architecture for semantic heterogeneity support
Abstract :
Semantic heterogeneity in heterogeneous autonomous databases poses problems in instance matches, units conversion (value interpretation), contextual and structural mismatches, etc. The authors examine some of the research issues in semantic heterogeneity and propose a novel architecture for resolving such problems. The approach involves the use of artificial intelligence tools and techniques to construct domain models, that is data and knowledge representations of the constituent databases and an overall domain model of the semantic interactions among the databases. These domain models are represented as knowledge sources (KSs) in a blackboard architecture. This architecture lends itself to an opportunistic approach to query processing and goal-directed problem solving. They introduce the notion of data/knowledge packets as a means of supporting semantic heterogeneity, and show how an active and intelligent global thesaurus can be used to reformulate queries based on knowledge associated with terms and their usage in local databases
Keywords :
deductive databases; knowledge based systems; knowledge representation; problem solving; InHead; artificial intelligence tools; blackboard architecture; data packets; domain models; goal-directed problem solving; intelligent global thesaurus; intelligent heterogeneous autonomous database; knowledge packets; knowledge representations; knowledge sources; local databases; query processing; semantic heterogeneity support; semantic interactions; structural mismatches; units conversion; value interpretation; Artificial intelligence; Data engineering; Deductive databases; Information systems; Knowledge representation; Object oriented databases; Object oriented modeling; Problem-solving; Query processing; Thesauri;
Conference_Titel :
Interoperability in Multidatabase Systems, 1991. IMS '91. Proceedings., First International Workshop on
Conference_Location :
Kyoto
Print_ISBN :
0-8186-2205-9
DOI :
10.1109/IMS.1991.153698