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Query subsumption

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Flexible Query Answering Systems (FQAS 1998)

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

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Abstract

Subsumption between queries provides valuable information, for example in an interoperability environment when there is a need to convert queries over different systems especially when the query conversion is very expensive or unavailable. In this paper we develop algorithms to test query subsumption as well as an algorithm to write filter queries. Our algorithms cover both conjunctive and disjunctive queries. The algorithm deals with function free queries and it does not take integrity constraints into account.

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Author information

Authors and Affiliations

  1. Department of Computer Science, University of Keele, ST5 5BG, Keele, Staffs, UK

    Mohammad Al-Qasem & S. Misbah Deen

Authors
  1. Mohammad Al-Qasem
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  2. S. Misbah Deen
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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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Al-Qasem, M., Deen, S.M. (1998). Query subsumption. 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/BFb0055989

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  • DOI: https://doi.org/10.1007/BFb0055989

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-65082-9

  • Online ISBN: 978-3-540-49655-7

  • eBook Packages: Springer Book Archive

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