7 citations · 10 across the 3 of their papers we have counts for
3 papers · 1 filter
Counting Query Answers over a DL-Lite Knowledge Base (extended version)
Diego Calvanese, Julien Corman, Davide Lanti +1
Counting answers to a query is an operation supported by virtually all database management systems. In this paper we focus on counting answers over a Knowledge Base (KB), which may…
Enriching Ontology-based Data Access with Provenance (Extended Version)
Diego Calvanese, Davide Lanti, Ana Ozaki +2
Ontology-based data access (OBDA) is a popular paradigm for querying heterogeneous data sources by connecting them through mappings to an ontology. In OBDA, it is often difficult t…
OBDA Constraints for Effective Query Answering (Extended Version)
Dag Hovland, Davide Lanti, Martin Rezk +1
In Ontology Based Data Access (OBDA) users pose SPARQL queries over an ontology that lies on top of relational datasources. These queries are translated on-the-fly into SQL queries…