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Navigating Through Multiple Temporal Granularity Objects


Elisa Bertino, Elena Ferrari, Giovanna Guerrini, and Isabella Merlo

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Abstract

Managing and relating temporal information at different time units is an important issue in many applications and research areas, among them temporal object-oriented databases. Due to the semantic richness of the object-oriented data model, the introduction of multiple temporal granularities in such a model poses several interesting issues. In particular, object-oriented query languages provide a navigational approach to data access, performed via path expressions. In this paper we present an extension to path expressions to a multi-granularity context. The syntax and semantics of the proposed path expressions are formally defined.


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