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The event matching language for querying temporal data

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2 Author(s)
Cheng, T.S. ; IBM Global e-business Solution Center, Roanoke, TX, USA ; Gadia, S.K.

Querying object evolution in temporal databases is interesting, but neither SOL-like algebraic languages nor general purpose languages take evolution into account. This paper presents a language, called the Event Matching Language, that is specifically designed for querying object evolution. The language is a pattern matching language based on the concept of cursor borrowed from SNOBOL4.

Published in:

Knowledge and Data Engineering, IEEE Transactions on  (Volume:14 ,  Issue: 5 )