What does Rollback do?
A. Undoes the transactions before commit
B. Clears all transactions
C. Redoes the transactions before commit
D. No action
Answer:A
What does Rollback do?
A. Undoes the transactions before commit B. Clears all transactions C. Redoes the transactions before commit D. No action
Explanation:Once a transaction has executed commit work, its effects can no longer be undone by rollback work. 5. In case of any shut down during transaction before commit which of the following statement is done automatically ?