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- W1592058805 abstract "This report describes the use of metadata in the development and maintenance of a global schema interface to heterogeneous databases. First, we define metadata in terms of abstract data types and operators. Then, we show how metadata can be used in the interface between a database and an application. We generalize this use of metadata to simplify schema integration and semantic reconciliation between a global schema and an application. Metadata is also used to determine if changes in data semantics affect the data requirements of an application. In a heterogeneous system, metadata can be used to determine if an application is affected by changes in the semantics of the underlying databases. Finally, we show that, in some instances, when the global schema and the application are not semantically consistent, metadata can be used to modify the data so that it will be meaningful to the application." @default.
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- W1592058805 date "1989-01-01" @default.
- W1592058805 modified "2023-09-27" @default.
- W1592058805 title "Schema integration using metadata" @default.
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