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1 LRI - Laboratoire de Recherche en Informatique 2 OAK - Database optimizations and architectures for complex large data LRI - Laboratoire de Recherche en Informatique, UP11 - Université Paris-Sud - Paris 11, Inria Saclay - Ile de France, CNRS - Centre National de la Recherche Scientifique : UMR8623

Abstract : We introduce the database fragment of RDF, which extends the popular Description Logic fragment, in particular with support for incomplete information. We then provide novel sound and complete saturation- and reformulation-based techniques for answering the Basic Graph Pattern queries of SPARQL in this fragment. Notably, we extend the state of the art on pushing RDF query processing within robust - efficient relational database management systems. Finally, we experimentally compare our query answering techniques using well-established datasets.

Author: François Goasdoué - Ioana Manolescu - Alexandra Roatis -



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