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Efficient queries over web views

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Advances in Database Technology — EDBT'98 (EDBT 1998)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 1377))

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Abstract

Large web sites are becoming repositories of structured information that can benefit from being viewed and queried as relational databases. However, querying these views efficiently requires new techniques. Data usually resides at a remote site and is organized as a set of related HTML documents, with network access being a primary cost factor in query evaluation. This cost can be reduced by exploiting the redundancy often found in site design. We use a simple data model, a subset of the Araneus data model, to describe the structure of a web site. We augment the model with link and inclusion constraints that capture the redundancies in the site. We map relational views of a site to a navigational algebra and show how to use the constraints to rewrite algebraic expressions, reducing the number of network accesses.

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Author information

Authors and Affiliations

  1. DIFA, Università della Basilicata, Potenza, Italy

    Giansalvatore Mecca

  2. Dept. of Computer Science, University of Toronto, Canada

    Alberto O. Mendelzon

  3. Dip. Informatica e Automazione, Università di Roma Tre, Roma, Italy

    Paolo Merialdo

Authors
  1. Giansalvatore Mecca
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  2. Alberto O. Mendelzon
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  3. Paolo Merialdo
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Editor information

Hans-Jörg Schek Gustavo Alonso Felix Saltor Isidro Ramos

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© 1998 Springer-Verlag Berlin Heidelberg

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Mecca, G., Mendelzon, A.O., Merialdo, P. (1998). Efficient queries over web views. In: Schek, HJ., Alonso, G., Saltor, F., Ramos, I. (eds) Advances in Database Technology — EDBT'98. EDBT 1998. Lecture Notes in Computer Science, vol 1377. Springer, Berlin, Heidelberg . https://doi.org/10.1007/BFb0100978

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  • DOI: https://doi.org/10.1007/BFb0100978

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-64264-0

  • Online ISBN: 978-3-540-69709-1

  • eBook Packages: Springer Book Archive

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