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    CORR
    2011
    Springer
    144views Education» more  CORR 2011»
    Rewriting Ontological Queries into Small Nonrecursive Datalog Programs
    13 years 2 months ago
    Rewriting Ontological Queries into Small Nonrecursive Datalog Programs
    Download  sunsite.informatik.rwth-aachen.de
    Abstract. We consider the setting of ontological database access, where an Abox is given in form of a relational database D and where a Boolean conjunctive query q has to be evalua...
    Georg Gottlob, Thomas Schwentick
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    DLOG
    2011
    251views Automated Reasoning» more  DLOG 2011»
    Goal-oriented Query Rewriting for OWL 2 QL
    13 years 2 months ago
    Goal-oriented Query Rewriting for OWL 2 QL
    Download  sunsite.informatik.rwth-aachen.de
    We present an optimized query rewriting algorithm for OWL 2 QL that computes the rewriting set of a user query by avoiding unnecessary inferences and extended clause subsumption ch...
    Alexandros Chortaras, Despoina Trivela, Giorgos B....
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