Question

In the context of concurrency control, a given pair of operations in a schedule is called conflict schedule if

(a) at least one of the operations is write operation.
(b) both the operations are performed on the same data item.
(c) both the operations are performed by different transactions.
(d) both the operations are performed on different data
the correct answer from the options given below:
o (a) and (b) only
o (a), (b) and (c) only
o (a), (c) and (d) only
o (c) and (d) only

Answer 1

In the context of concurrency control, a conflict schedule refers to a pair of operations that meet certain criteria. The correct options are (a), (b), and (c) only.

Step-by-step explanation:

In the context of concurrency control, a conflict schedule refers to a pair of operations that meet certain criteria. The correct options are (a), (b), and (c) only.

1. At least one of the operations is a write operation: This ensures that there is a possibility of conflict in the schedule.
2. Both operations are performed on the same data item: This means that both operations are accessing and modifying the same data, which can lead to conflicts.
3. Both operations are performed by different transactions: This condition ensures that the operations are from different transactions, increasing the likelihood of conflicts.

Therefore, the correct answer is (a), (b), and (c) only.