When two transactions are being processed against the database at the same time:
A)they are called concurrent transactions.
B)they are usually interleaved.
C)they always result in a lost update problem.
D)one must be rolled back.
E)A and B

Question

Quizplus · Accepted Answer

When two transactions are being processed against the database at the same time, they are called concurrent transactions and are usually interleaved. Therefore, both choices A and B are correct. However, not all concurrent transactions result in a lost update problem, so choice C is incorrect. Also, rolling back one of the transactions may not always be necessary or desirable, so choice D is incorrect.

When Two Transactions Are Being Processed Against the Database at the Same