A framework for building logical schema and query decomposition in data warehouse federations

Authors:
Rafał Kern;Krzysztof Ryk;Ngoc Thanh Nguyen
Affiliations:
Wroclaw University of Technology, Wyb.Wyspianskiego, Wroclaw, Poland;Wroclaw University of Technology, Wyb.Wyspianskiego, Wroclaw, Poland;Wroclaw University of Technology, Wyb.Wyspianskiego, Wroclaw, Poland
Venue:
ICCCI'11 Proceedings of the Third international conference on Computational collective intelligence: technologies and applications - Volume Part I
Year:
2011

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Abstract

In this paper a framework for building logical schema and query decomposition procedure for federations of data warehouses has been proposed. The logical schema of a data warehouse federation arises as the result of integration of the schemas of component data warehouses. A user query refers to the schema of the federation, therefore, the query decomposition process is needed.