HP Labs Technical Reports

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Object Identification in Multi-Database Systems

Kent, William; Ahmed, Rafi; Albert, Joseph; Ketabchi, Mohammed; Shan, Ming-Chien



Abstract: In the Pegasus prototype multidatabase system, the key to the problem of object identity is a differentiation between the view of a data administrator, capturing all the underlying discrepancies and their solutions, and the view of an end user or application, in which only a consistent result is visible. New language constructs with which the administrator can describe solutions to identify problems include underlying and unifying types, the Image function, and producer types.

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