Transforming Heterogeneous Data with Database Middleware: Beyond Integration.

Abstract

Many applications today need information from diverse data sources, in which related data may be represented quite differently. In one common scenario, a DBA wants to add data from a new source to an existing warehouse. The data in the new source may not match the existing warehouse schema. The new data may also be partially redundant with that in the existing warehouse, or formatted differently. Other applications may need to integrate