A method is described for integrating two or more databases into a conceptual "superview", through a set of schema transformations. Such integration may be useful when it is required to produce a unified view of two databases while preserving their physical independence. Each transformation defines a mapping of queries against the superview into the appropriate set of queries against the underlying databases and imposes a constraint that is checked when the query is evaluated. A program that interactively aids the user in constructing the superview and that performs this query transformation is being developed.
|Title of host publication||Proceedings of the 1981 ACM SIGMOD International Conference on Management of Data|
|Place of Publication||New York, NY, USA|
|Number of pages||9|
|Publication status||Published - 1981|