Abstract
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 series of experiments and demonstrate that, for standard ontologies, queries and data stored in relational databases, Ontop is fast, efficient and produces SQL rewritings of high quality. © 2013 Springer-Verlag.
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CITATION STYLE
Rodríguez-Muro, M., Kontchakov, R., & Zakharyaschev, M. (2013). Ontology-based data access: Ontop of databases. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 8218 LNCS, pp. 558–573). https://doi.org/10.1007/978-3-642-41335-3_35
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