Query transformation of SQL into XQuery within federated environments

Authors:
Heiko Jahnkuhn;Ilvio Bruder;Ammar Balouch;Manja Nelius;Andreas Heuer
Affiliations:
Department of Computer Science, University of Rostock, Rostock, Germany;Department of Computer Science, University of Rostock, Rostock, Germany;Department of Computer Science, University of Rostock, Rostock, Germany;Department of Computer Science, University of Rostock, Rostock, Germany;Department of Computer Science, University of Rostock, Rostock, Germany
Venue:
EDBT'06 Proceedings of the 2006 international conference on Current Trends in Database Technology
Year:
2006

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Abstract

Federated information systems integrate various heterogeneous autonomic databases and information systems. Queries respect to the federation have to be translated into the local query language and must be transformed with respect to the local data model. This paper deals with the problem of a global query according to an object-relational federation service. This SQL query is to be translated into an equivalent XQuery expression, so that it can be processed by the corresponding XML component database system according to the local schema.