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A logic-based approach to data integration

Published online by Cambridge University Press:  23 April 2002

JOHN GRANT  and
JACK MINKER
JOHN GRANT
Affiliation:
Department of Computer and Information Sciences, and Department of Mathematics, Towson University, Towson, MD, USA (e-mail: [email protected])
JACK MINKER
Affiliation:
Department of Computer Science, and Institute for Advanced Computer Studies, University of Maryland at College Park, College Park, MD, USA (e-mail: [email protected])
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Abstract

An important aspect of data integration involves answering queries using various resources rather than by accessing database relations. The process of transforming a query from the database relations to the resources is often referred to as query folding or answering queries using views, where the views are the resources. We present a uniform approach that includes as special cases much of the previous work on this subject. Our approach is logic-based using resolution. We deal with integrity constraints, negation, and recursion also within this framework.

Keywords

Clark completiondata integrationmaterialized viewsquery foldingresolution methodstratified databases
Type
Research Article
Information
Theory and Practice of Logic Programming , Volume 2 , Issue 3 , May 2002 , pp. 323 - 368
Copyright
© 2002 Cambridge University Press

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