Ontology is a conceptual model that describes concepts and the relationships between concepts. It describes the semantics of concepts through the relationships between concepts. As a model that effectively expresses the hierarchy and semantics of concepts, ontology is widely used in heterogeneous data integration. This paper proposes a scheme for heterogeneous data integration using ontology, gives the overall design framework of the integration system, studies and designs key technologies such as ontology creation and ontology mapping, and uses OWL to describe ontology and perform reasoning.
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