Distributed Databases
Location transparency allows for which of the following?

All of these
Managers to treat the data as if it is at one location
Programmers to treat the data as if it is at one location
Users to treat the data as if it is at one location

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Distributed Databases
Which of the following is true concerning a global transaction?

The required data are at one local site and the distributed DBMS routes requests as necessary.
The required data are located in at least one nonlocal site and the distributed DBMS routes requests as necessary.
The required data are located in at least one nonlocal site and the distributed DBMS passes the request to only the local DBMS.
The required data are at one local site and the distributed DBMS passes the request to only the local DBMS.

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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.
Each transaction may proceed without coordination across the network.
Reduced network traffic
Each site must have the same storage capacity.

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