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Formal characterization of active databases

  • Chitta Baral
  • Jorge Lobo
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1154)

Abstract

In this paper we take a first step towards characterizing active databases. Declarative characterization of active databases allows additional flexibility in studying the effects of different priority criteria between fireable rules, different actions and event definitions, and also to make claims about effects of transaction and prove them without actually executing them. Our characterization is related but different from similar attempts by Zaniolo in terms of making a clear distinction between actual and hypothetical execution of actions and allowing non-determinism. We use the ‘choice’ construct [SZ90] to characterize the non-determinism that arises when several rules can fire at the same time and the preference between them is not specified. We show through examples how our language allows us to express features of different active database systems.

Keywords

Logic Program Logic Programming Stable Model Active Rule Event Definition 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1996

Authors and Affiliations

  • Chitta Baral
    • 1
  • Jorge Lobo
    • 2
  1. 1.Department of Computer Sc.Univ. of Texas at El PasoEl PasoUSA
  2. 2.Department of EECSUniv. of Illinois at ChicagoChicagoUSA

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