Database Management Systems Mcqs

Page No. 59

To delete a database ___________ command is used


aDelete database database_name

✖


bDelete database_name

✖


cdrop database database_name

✓


ddrop database_name

✖



Which of the following is/are the Database server functions?
i) Data management
ii) Transaction management
iii) Compile queries
iv) Query optimization


ai, ii, and iv only

✓


bi, ii and iii only

✖


cii, iii and iv only

✖


dAll i, ii, iii, and iv

✖


View Answer i, ii, and iv only

Which of the following is not a state in transaction?


aActive

✖


bTerminated

✓


cAborted

✖


dPartially committed

✖


View Answer Terminated

If the state of the database no longer reflects a real state of the world that the database is supposed to capture, then such a state is called


aConsistent state

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bParallel state

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cAtomic state

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dInconsistent state

✓


View Answer Inconsistent state

Which of the following is an atomic sequence of database actions?


aTransaction

✓


bConcurrency

✖


cRelations

✖


dAll of the mentioned

✖


View Answer Transaction

The name of the transaction file shall be provided by the operator and the file that contains the edited transactions ready for execution shall be called


aBatch. Exe

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bTrans. Exe

✖


cOpt. Exe

✓


dEdit.Exe

✖


View Answer Opt. Exe

When the transaction finishes the final statement the transaction enters into


aActive state

✖


bCommitted state

✖


cPartially committed state

✓


dAbort state

✖



Each modification done in database transaction are first recorded into the


aHard drive

✖


bLog

✓


cDisk

✖


dDatamart

✖


View Answer Log

If an transaction is performed in a database and committed, the changes are taken to the previous state of transaction by


aFlashback

✖


bRollback

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cBoth Flashback and Rollback

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dCannot be done

✓


View Answer Cannot be done

A transaction may not always complete its execution successfully. Such a transaction is termed


aAborted

✓


bTerminated

✖


cClosed

✖


dAll of the mentioned

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View Answer Aborted

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