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Is point-based semantics always adequate for temporal databases?

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1 Author(s)
Terenziani, P. ; Dipt. di Sci. e Tecnologie Avanzate, Univ. del Piemonte Orientale Amedeo Avogadro, Alessandria, Italy

The analysis of the semantics of temporal data and queries plays a central role in the area of temporal relational databases. Although many different models and algebra have been proposed, almost all of them are based on a point-based (snapshot) semantics of the association of time to tuples/attributes. On the other hand, in the areas of linguistics, philosophy, and recently, artificial intelligence, a very debated issue concerns the use of an interval-based vs. a point-based semantics. We consider a slight adaptation of TSQL2's “consensus” algebra and model, discuss its semantics, and show some critical aspects arisen by the adoption of a point-based semantics

Published in:

Temporal Representation and Reasoning, 2000. TIME 2000. Proceedings. Seventh International Workshop on

Date of Conference:

2000

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