A commit is a record of what the data in a row looked like before an update.
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Q12: The DBMS must successfully complete all transaction
Q13: DBMSs must manage multiple copies of the
Q14: In two-phase locking, the second phase is
Q15: When a DBMS uses journaling, the update
Q16: Which of the following is NOT one
Q18: One guideline for writing programs for concurrent
Q19: Which of the following contains information about
Q20: One of the nine functions of a
Q21: What does a DBMS do to break
Q22: Which authentication method identifies users by physical
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