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Optimal use of triggers for detecting database events

  • US 7,984,021 B2
  • Filed: 12/05/2003
  • Issued: 07/19/2011
  • Est. Priority Date: 12/05/2003
  • Status: Active Grant
First Claim
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1. A method of monitoring events in a database, said method comprising:

  • storing in said database at least one database rule;

    mapping temporal constraints of an event of said database rule to corresponding temporal events;

    changing said temporal constraints associated with said temporal events based upon related temporal constraints for related events of said database rule to provide changed temporal constraints;

    registering alarms associated with a start and end of a lifespan of each of said temporal events;

    selectively deploying and selectively permanently removing ones of said temporal events from said database based upon said changed temporal constraints;

    upon reaching said end of said lifespan of each of said temporal events, permanently removing from said database said alarm associated with said ones of said temporal events permanently removed from said database;

    combining said temporal events using a sequence operator to form a composite event; and

    associating a lifespan to said composite event using said sequence operator.

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