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Which kind of failure loses its data in head crash or failure during a transfer operation.(a) Transaction failure(b) System crash(c) Disk failure(d) All of the mentionedThe question was asked by my college director while I was bunking the class.Origin of the question is Failure Classification in division Recovery System of Database Management

Answer»

Right choice is (c) DISK failure

The BEST EXPLANATION: Copies of the data on other disks, or archival backups on TERTIARY media, such as DVD or tapes, are used to RECOVER from the failure.



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