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Distributed Databases

Answer: D

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2.

Storing a separate copy of the database at multiple locations is which of the following?

Answer: A

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3.

Some of the columns of a relation are at different sites is which of the following?

Answer: C

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Answer: A

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5.

The semijoin approach saves network traffic.

Answer: A

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6.

Replication may use either synchronous or asynchronous distributed database technologies, although asynchronous technologies are more typical in a replicated environment.

Answer: A

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Answer: C

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8.

Which of the following is not one of the stages in the evolution of distributed DBMS?

Answer: A

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Answer: D

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Answer: C

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