Advanced Processing for Ontological Queries

  title={Advanced Processing for Ontological Queries},
  author={Andrea Cal{\`i} and Georg Gottlob and Andreas Pieris},
Ontology-based data access is a powerful form of extending database technology, where a classical extensional database (EDB) is enhanced by an ontology that generates new intensional knowledge which may contribute to answer a query. The ontological integrity constraints for generating this intensional knowledge can be specified in description logics such as DL-Lite. It was recently shown that these formalisms allow for very efficient query-answering. They are, however, too weak to express… CONTINUE READING
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