| be an important problem. Organizations typically have (2008) | |||||||||||||||||
Abstract | |||||||||||||||||
| The number of data sources that an organization has to deal with continues to be nontrivial. Integrating this data is a growing problem. A great deal of research has been done to solve the general problem. Work on topics like multidatabase, mediators, and ontologies has been directed at solving the general data integration problem. While all of this activity has been useful, the general problem of integrating heterogeneous data sources remains only partially solved. The present work looks at the solution of a subproblem of the general problem where the data sources are restricted to relational databases and record-based legacy systems owned by the same organization. For many organizations, this restriction precisely defines | |||||||||||||||||
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