%0 Journal Article %J Theory Pract. Log. Program. %D 2002 %T A logic-based approach to data integration %A Grant,John %A Minker, Jack %K Clark completion %K Data integration %K materialized views %K query folding %K resolution method %K stratified databases %X 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. %B Theory Pract. Log. Program. %V 2 %P 323 - 368 %8 2002/05// %@ 1471-0684 %G eng %U http://dx.doi.org/10.1017/S1471068401001375 %N 3 %R 10.1017/S1471068401001375