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International Conference on Flexible Query Answering Systems

FQAS 1998: Flexible Query Answering Systems pp 366–381Cite as

Semantic query optimization through abduction and constraint handling

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Part of the book series: Lecture Notes in Computer Science ((LNAI,volume 1495))

Abstract

The use of integrity constraints to perform Semantic Query-Optimization (SQO) in deductive databases can be formalized in a way similar to the use of integrity constraints in Abductive Logic Programming (ALP) and the use of Constraint Handling Rules in Constraint Logic Programming (CLP). Based on this observation and on the similar role played by, respectively, extensional, abducible and constraint predicates in SQO, ALP and CLP, we present a unified framework from which (variants of) SQO, ALP and CLP can be obtained as special instances. The framework relies on a proof procedure which combines backward reasoning with logic programming clauses and forward reasoning with integrity constraints.

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Author information

Authors and Affiliations

  1. Logic Based Systems Lab, Department of Computer Science, Brooklyn College, 11210, NY, USA

    Gerhard Wetzel

  2. Department of Computing, Imperial College, SW7 2BZ, London, UK

    Francesca Toni

Authors
  1. Gerhard Wetzel
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  2. Francesca Toni
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Editor information

Troels Andreasen Henning Christiansen Henrik Legind Larsen

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© 1998 Springer-Verlag Berlin Heidelberg

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Wetzel, G., Toni, F. (1998). Semantic query optimization through abduction and constraint handling. In: Andreasen, T., Christiansen, H., Larsen, H.L. (eds) Flexible Query Answering Systems. FQAS 1998. Lecture Notes in Computer Science, vol 1495. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0056017

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  • DOI: https://doi.org/10.1007/BFb0056017

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-65082-9

  • Online ISBN: 978-3-540-49655-7

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