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Federated Databases

1. What is a federated database and why are federated databases becoming increasingly common?

2. What are examples of databases in a work enviroment that could be federated?

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1. What is a federated database and why are federated databases becoming increasingly common?

"A federated database system is a type of meta-database management system (DBMS) which transparently integrates multiple autonomous database systems into a single federated database. The constituent databases are interconnected via a computer network, and may be geographically decentralized. Since the constituent database systems remain autonomous, a federated database system is a contrastable alternative to the (sometimes daunting) task of merging together several disparate databases. A federated database (or virtual database) is the fully-integrated, logical composite of all constituent databases in a federated database system.?(From http://en.wikipedia.org/wiki/Federated_database)

Another definition from Oracle: "A federated database is a logical unification of distinct databases running on ...

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7 paragraph discussion of federated databases

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