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On (In)Tractability of OBDA with OWL 2 QL
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DLOG
2011
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Automated Reasoning
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On (In)Tractability of OBDA with OWL 2 QL
13 years 2 months ago
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sunsite.informatik.rwth-aachen.de
We show that, although conjunctive queries over OWL 2 QL ontologies are reducible to database queries, no algorithm can construct such a reduction in polynomial time without changi...
Stanislav Kikot, Roman Kontchakov, Michael Zakhary...
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SEMWEB
2009
Springer
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Internet Technology
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Improving the Data Quality of Relational Databases using OBDA and OWL 2 QL
14 years 5 months ago
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www.webont.org
Olivier Curé
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