Foundations of ontology-based data access under bag semantics
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—tha...
| Autori principali: | , , , , , |
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| Natura: | Journal article |
| Pubblicazione: |
Elsevier
2019
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