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Which of the following is true concerning a global transaction?

A. The required data are at one local site and the distributed DBMS routes requests as necessary.

B. The required data are located in at least one nonlocal site and the distributed DBMS routes requests as necessary.

C. The required data are at one local site and the distributed DBMS passes the request to only the local DBMS.

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

Answer: Option B


This Question Belongs to Database >> Distributed Databases

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An autonomous homogenous environment is which of the following?

A. The same DBMS is at each node and each DBMS works independently.

B. The same DBMS is at each node and a central DBMS coordinates database access.

C. A different DBMS is at each node and each DBMS works independently.

D. A different DBMS is at each node and a central DBMS coordinates database access.