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11. Data replication is favored where most process requests are read-only and where the data are relatively static.

A. True
B. False

Show Answer

12. The cost to perform a snapshot refresh may depend on whether the snapshot is simple or complex.

A. True
B. False

Show Answer

13. The semijoin approach saves network traffic.

A. True
B. False

Show Answer

14. In a semijoin, only the joining attribute is sent from one site to another, and then only the required rows are returned.

A. True
B. False

Show Answer

15. The problem of concurrency control is more complex in a distributed database.

A. True
B. False

Show Answer
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