Question: Common causes of database failures include hardware failures, proramming buas, human errors / mistakes . and maliciousactions. As these issues are impossible to completely avoid,
Common causes of database failures include hardware failures, proramming buas, human errorsmistakes and maliciousactions. As these issues are impossible to completely avoid, recovery procedures are essentia.
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One method of recovery is reprocessing. Here, all activities since the last backup are redone. The time it takes to do this isthe same amount of time it took when first entered. One downside is that if the system is heavily scheduled, it might nevercatch up
Another option is rollbackrollforward where the DBMS records activities into a log file. Which of the following is not trueabout rollbackrollforward
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