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


bParallel state


cAtomic state


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


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


cBoth Flashback and Rollback


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


View Answer Aborted

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