The DBMS keeps several copies of ____________________ to ensure that a disk physical failure will not impair the DBMS's ability to recover data.
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Q42: To determine the appropriate order of the
Q43: _ can take place at any of
Q47: Although the DBMS is designed to recover
Q51: Most multiuser _ automatically initiate and enforce
Q61: Database transaction _ restores a database from
Q64: What are database checkpoints?
Q67: What are the three basic techniques to
Q69: What is transaction isolation and why it
Q71: Explain the transaction log.What is its function?
Q71: If T1 has not unlocked data item
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