The Center for Education and Research in Information Assurance and Security (CERIAS)

The Center for Education and Research in
Information Assurance and Security (CERIAS)
Center for Education and Research in Information Assurance and Security

Attribute Refinement in a Multigranular Temporal Object Data Model

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Author

Elisa Bertino, Elena Camossi, Giovanna Guerrini

Tech report number

CERIAS TR 2009-06

Entry type

article

Abstract

Temporal granularities are the unit of measure for temporal data, thus a multigranular temporal object model allows to store temporal data at different levels of detail, according to the needs of the application domain. In this paper we investigate how the integration of multiple temporal granularities in an object-oriented data model impacts on the inheritance hierarchy. In the paper we specifically address issues related to attribute refinement, and the consequences on object substitutability. This entails the development of suitable instruments for converting temporal values from a granularity to another.

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Date

2009 – 4 – 8

Key alpha

Bertino

Publication Date

2009-04-08

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