Abstract
The OWL 2 QL profile, which is based on DL-LiteR, has been designed so that query answering is possible using relational database technology via query rewriting. Unfortunately, given a query Q posed in terms of an OWL 2 QL ontology O, the size of the rewritten query, Q o , which can be evaluated directly on the relational database, is worst case exponential w.r.t the size of Q and O [1]. This means that the computation and evaluation of Q o can be costly. Recent research focuses on creating rewriting algorithms that generates Q o with a smaller size [3].
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References
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Sequeda, J.F., Arenas, M., Miranker, D.P. (2012). Ontology-Based Data Access Using Views. In: Krötzsch, M., Straccia, U. (eds) Web Reasoning and Rule Systems. RR 2012. Lecture Notes in Computer Science, vol 7497. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-33203-6_29
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DOI: https://doi.org/10.1007/978-3-642-33203-6_29
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