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Ontology-based data integration
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<p>Ontology-based data integration involves the use of one or more <a href="/facts/Ontology_(information_science)/SQlhl6lp">ontologies</a> to effectively combine data or information from multiple heterogeneous sources. It is one of the multiple <a href="/facts/Data_integration/BU47JR28">data integration</a> approaches and may be classified as Global-As-View (GAV). The effectiveness of ontology‑based data integration is closely tied to the consistency and expressivity of the ontology used in the integration process. </p>