Distributed Databases - Database MCQ Questions and answers- Technical Aptitude

1.
A distributed database has which of the following advantages over a centralized database?

A. Software cost

B. Software complexity

C. Slow Response

D. Modular growth

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.

A. Maintains a log of transactions

B. Maintains before and after database images

C. Maintains appropriate concurrency control

D. All of the above

A. Users to treat the data as if it is at one location

B. Programmers to treat the data as if it is at one location

C. Managers to treat the data as if it is at one location

D. All of the above

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

B. The same DBMS is used at each location and data are distributed across all nodes.

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

D. A different DBMS is used at each location and data are distributed across all nodes.

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