Ontology-based data access: a study through disjunctive datalog, CSP, and MMSNP
international conference on management of data, Volume 39, Issue 4, 2014.
first-order rewritabilityguarded fragmentontology-based data accessquery containment problemincomplete data sourceMore(6+)
Ontology-based data access is concerned with querying incomplete data sources in the presence of domain-specific knowledge provided by an ontology. A central notion in this setting is that of an ontology-mediated query, which is a database query coupled with an ontology. In this paper, we study several classes of ontology-mediated queries...More
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