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Expressing temporal behaviour with extended ECA rules

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Directions in Databases (BNCOD 1994)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 826))

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Abstract

The ECA (EventConditionAction) model constitutes the underlying theoretical model for active databases. The action of an ECA rule is triggered, when the event is detected and the condition is satisfied. Currently, only predicate logic expressions are allowed as conditions in ECA rules. We want to consider the use of temporal logic expressions instead. This allows the specification of situations involving the temporal database development. Temporal conditions are necessary for, among other things, the maintenance of dynamic integrity constraints. We introduce initialized temporal ECA rules which allow the explicit specification of the evaluation-periods of temporal conditions. Moreover we discuss the construction and evaluation of an IT-ECA automaton for the evaluation of intialized temporal ECA rules.

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Authors and Affiliations

  1. Computer Laboratory, University of Cambridge, CB2 3QG, Cambridge, UK

    Scarlet Schwiderski

  2. Informatik, Abt. Datenbanken, Technische Universität Braunschweig, 38023, Braunschweig, FRG

    Gunter Saake

Authors
  1. Scarlet Schwiderski
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  2. Gunter Saake
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David S. Bowers

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© 1994 Springer-Verlag Berlin Heidelberg

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Schwiderski, S., Saake, G. (1994). Expressing temporal behaviour with extended ECA rules. In: Bowers, D.S. (eds) Directions in Databases. BNCOD 1994. Lecture Notes in Computer Science, vol 826. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-58235-5_33

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  • DOI: https://doi.org/10.1007/3-540-58235-5_33

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  • Print ISBN: 978-3-540-58235-9

  • Online ISBN: 978-3-540-48580-3

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