Gomez, R.S. and Augusto, J.C.
Durative Events in Active Databases.
In: ICEIS 2004, Proceedings of the 6th International Conference on Enterprise Information Systems, April 2004, Porto, Portugal,.
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Active databases are DBMS which are able to detect certain events in the environment and trigger actions in consequence. Event detection has been subject of much research, and a number of different event specification languages is extant. However, this is far from being a trivial or accomplished task. Most of these languages handle just instantaneous events, but it has been noticed that a number of situations arise where it would be interesting or even necessary to handle durative events. We elaborate on a given specification language which combines instantaneous and durative events, revealing some issues which must be taken into account when the semantics of event composition is defined.
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