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Theses
Réécriture de requêtes en termes de vues en présence de contraintes de valeurs pour un système d'intégration de sources de données agricoles
Réécriture de requêtes en termes de vues en présence de contraintes de valeurs pour un système d'intégration de sources de données agricoles
Abstract : This thesis addresses the problem of query rewriting using views in the presence of value constraints. Value constraints allow for restricting value domain of a given attribute. They have been receiving a lot of attention because of their usefulness in the ontology web language OWL and in practical applications This work is motivated by a real application that aims at providing a scalable and exible integration system for agricultural data sources. The investigation of this problem is based on the description logics framework that allows for studying the problem decidability. This work provides also a mapping between the problem of computing rewritings due to the presence of value constraints and the framework of Knowledge Discovery in Database (KDD) introduced by Mannila and Toivonen. That enables us to reuse existing and ef cient algorithms to effectively compute rewritings and propose a scalable prototype of rewriting.
Cited literature [100 references]
https://tel.archives-ouvertes.fr/tel-00684041
Contributor : Camille Meyer <>
Submitted on : Friday, March 30, 2012 - 2:09:28 PM
Last modification on : Monday, January 20, 2020 - 12:12:05 PM
Long-term archiving on: : Wednesday, December 14, 2016 - 7:27:06 PM
Contributor : Camille Meyer <>
Submitted on : Friday, March 30, 2012 - 2:09:28 PM
Last modification on : Monday, January 20, 2020 - 12:12:05 PM
Long-term archiving on: : Wednesday, December 14, 2016 - 7:27:06 PM