Composite events in NAOS

  • Christine Collet
  • Thierry Coupaye
Active and Temporal Aspects 2
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1134)


This paper deals with composite events in active databases. It describes the syntax and semantics of NAOS composite event expressions. This semantics is based on the semantics of the proposed operators and on the notions of context of detection and validity interval These notions are central especially for event types containing negations and strict disjunctions. The paper also describes the event detection process with is modelized by event graphs.


Event Type Composite Event Large Data Base Process Stop Event Expression 
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

  • Christine Collet
    • 1
  • Thierry Coupaye
    • 1
  1. 1.LSR-IMAGUniversity of GrenobleGrenoble cedex 9France

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