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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
Asynchronous technology can result in unsatisfactorily slow response time because the distributed DBMS is spending considerable time checking that an update is accurately and completely propagated across the network.

True
False

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

Horizontal and Vertical Partitioning
Vertical Partitioning
Horizontal Partitioning
Data Replication

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

Remote unit of work
Unit of work
Distributed request
Distributed unit of Work

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Distributed Databases
Databases that are stored on computers at multiple locations and are not interconnected by a network are known as distributed databases.

True
False

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

False
True

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