Explanation:If we are to ensure the atomicity property, an aborted transaction must have no effect on the state of the database. 2. If an transaction is performed in a database and committed, the changes are taken to the previous state of transaction by
A. Flashback
B. Rollback
C. Both a and b
D. Cannot be done
Answer:A
Explanation:If we are to ensure the atomicity property, an aborted transaction must have no effect on the state of the database. 2. If an transaction is performed in a database and committed, the changes are taken to the previous state of transaction by
A. Flashback B. Rollback C. Both a and b D. Cannot be done
Explanation:Once committed the changes cannot be rolled back.