Foundations of Ontology−Based Data Access under Bag Semantics

Artificial Intelligence, pp. 91-132, 2019.

Cited by: 7|Bibtex|Views81|DOI:https://doi.org/10.1016/j.artint.2019.02.003
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Abstract:

Ontology-based data access (OBDA) is a popular approach for integrating and querying multiple data sources by means of a shared ontology. The ontology is linked to the sources using mappings, which assign to ontology predicates views over the data. The conventional semantics of OBDA is set-based—that is, the extension of the views defined...More

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