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Distributed Databases

Distributed Databases
The purpose of timestamping is to avoid the use of locks.

True
False

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

Horizontal Partitioning
Data Replication
Horizontal and Vertical Partitioning
Vertical Partitioning

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Distributed Databases
A distributed database has which of the following advantages over a centralized database?

Modular growth
Software cost
Software complexity
Slow Response

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

Data Replication
Horizontal and Vertical Partitioning
Horizontal Partitioning
Vertical Partitioning

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Distributed Databases
Each site (or node) in a distributed system is subject to the same types of failure as in a centralized system.

False
True

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

True
False

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