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    DLOG
    2011
    256views Automated Reasoning» more  DLOG 2011»
    On (In)Tractability of OBDA with OWL 2 QL
    14 years 7 months ago
    On (In)Tractability of OBDA with OWL 2 QL
    Download  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
    149views Internet Technology» more  SEMWEB 2009»
    Improving the Data Quality of Relational Databases using OBDA and OWL 2 QL
    15 years 10 months ago
    Improving the Data Quality of Relational Databases using OBDA and OWL 2 QL
    Download  www.webont.org
    Olivier Curé
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