Answers to queries in possibly inconsistent databases may not have integrity. We formalize ‘has integrity’ on the basis of a definition of ‘causes’. A cause of an answer is a minimal excerpt of the database that explains why the answer has been given. An answer has integrity if one of its causes does not overlap with any cause of integrity violation.


Logic Program Belief Revision Conjunctive Query Explanation Base Minimal Repair 
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© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Hendrik Decker
    • 1
  1. 1.Instituto Tecnológico de InformáticaUniversidad Politécnica de ValenciaSpain

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