If database modifications occur while the transaction is still active, the transaction is said to use the ___________technique.
A. Deferred-modification
B. Late-modification
C. Immediate-modification
D. Undo
Answer:A
If database modifications occur while the transaction is still active, the transaction is said to use the ___________technique.
A. Deferred-modification B. Late-modification C. Immediate-modification D. Undo
Explanation:We say a transaction modifies the database if it performs an update on a disk buffer, or on the disk itself; updates to the private part of main memory do not count as database modifications.