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
A homogenous distributed database is which of the following?

The same DBMS is used at each location and data are not distributed across all nodes.
A different DBMS is used at each location and data are distributed across all nodes.
A different DBMS is used at each location and data are not distributed across all nodes.
The same DBMS is used at each location and data are distributed across all nodes.

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Distributed Databases
Replication should be used when which of the following exist?

When using many nodes with different operating systems and DBMSs and database designs.
All of these
The application's data can be somewhat out-of-date.
When transmission speeds and capacity in a network prohibit frequent refreshing of large tables.

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Distributed Databases
Which of the following is a disadvantage of replication?

If the database fails at one site, a copy can be located at another site.
Reduced network traffic
Each transaction may proceed without coordination across the network.
Each site must have the same storage capacity.

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