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Efficient Management of Schema Versioning in Multi-Temporal Databases

Brahmia, Zouhaier; Mkaouar, Mohamed; Chakhar, Salem; Bouaziz, Rafik (2013), Efficient Management of Schema Versioning in Multi-Temporal Databases, The International Arab Journal of Information Techonology, 9, 6, p. 544-552

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Type
Article accepté pour publication ou publié
Date
2013
Journal name
The International Arab Journal of Information Techonology
Volume
9
Number
6
Publisher
Zarqa Private University
Pages
544-552
Metadata
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Author(s)
Brahmia, Zouhaier
Mkaouar, Mohamed
Chakhar, Salem
Bouaziz, Rafik
Abstract (EN)
To guarantee a complete data history in temporal databases, database management systems have to manage both evolution of schema over time, through their versioning, and evolution of data defined under different schema versions. This paper proposes a new approach for schema versioning in multi-temporal databases. It allows an efficient management of schema versions and their underlying data, through a smooth conversion of the temporal database. When creating a new schema version, the basic idea consists in forbidding (i) any automatic transfer of data defined under previous schema versions to this new version, in order to avoid data loss and ambiguousness in the interpretation of temporal intervals of data, and (ii) any change in the structures of previous schema versions, in order to permit to the legacy applications to remain operational after this schema evolution.
Subjects / Keywords
Schema evolution; schema versioning; temporal databases; multi-temporal databases; application time; database conversion

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