Thèse soutenue

FR
Auteur / Autrice : Xiaohui Xue
Direction : Mokrane Bouzeghoub
Type : Thèse de doctorat
Discipline(s) : Informatique
Date : Soutenance en 2006
Etablissement(s) : Versailles-St Quentin en Yvelines

Mots clés

FR

Mots clés contrôlés

Résumé

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The integration of information originating from multiple heterogeneous data sources is required by many modern information systems. In this context, the applications’ needs are described by a target schema and the way in-stances of the target schema are derived from the data sources is expressed through mappings. In this thesis, we address the problem of mapping generation for multiple XML data sources and the adaptation of these mappings when the target schema or the sources evolve. We propose an automatic generation approach that first decom-poses the target schema into subtrees, then defines mappings, called partial mappings, for each of these subtrees, and finally combines these partial mappings to generate the mappings for the whole target schema. We also propose a mapping adaptation approach to keep existing mappings current if some changes occur in the target schema or in one of the sources. We have developed a prototype implementation of a tool to support these proc-esses