federated database


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Related to federated database: Virtual database

federated database

A collection of databases that are treated as one entity and viewed through a single user interface. See EII, virtual database and federated.
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Larson, Federated database systems for managing distributed, heterogeneous, and autonomous databases.
However, there is a risk that it could soon be eclipsed by the XML-based federated database technology being developed by Oracle, Microsoft and others.
Informix has recognized this critical trend and is pursuing a strategy to break down the barriers between OLTP and data warehousing with a federated database approach.
The term Federated Database emerged to characterize techniques for proving an integrated data access, having a set of distributed, heterogeneous and autonomous databases [17].
It has gone one step further than Oracle by introducing support for XQuery and enabling DB2 to potentially be used as the basis of a federated database project, in which a number of different data sources - including databases - can be queried as if they were one database.

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