Ontology-Based Data Access: Ontop of Databases


We present the architecture and technologies underpinning the OBDA system Ontop and taking full advantage of storing data in relational databases. We discuss the theoretical foundations of Ontop: the tree-witness query rewriting, T -mappings and optimisations based on database integrity constraints and SQL features. We analyse the performance of Ontop in a… (More)
DOI: 10.1007/978-3-642-41335-3_35


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