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Using temporary integrity constraints to optimize databases

  • Danilo Montesi
  • Chiara Renso
  • Franco Turini
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1085)

Abstract

Integrity constraints are usually assumed to be permanent properties that must be satisfied by any database state. However, there are many situations requiring also temporary constraints, that is, constraints that must hold only for a single database state. In this paper we propose a schema to define both permanent and temporary constraints, that supports efficient constraint checking and semantic query optimization. The proposed schema associates integrity constraints to rules and queries, and it uses methods, that were originally defined for permanent constraints only, to perform constraint checking and semantic query optimization.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1996

Authors and Affiliations

  • Danilo Montesi
    • 1
  • Chiara Renso
    • 2
  • Franco Turini
    • 2
  1. 1.School of Information SystemsUniversity of East AngliaNorwichUK
  2. 2.Dipartimento di InformaticaUniversità di PisaPisaItaly

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