Concurrency control & conflict schedule -DBMS
|Question 1 UGC NET June-2020|
In the context of concurrency control, a given pair of operations in a schedule is called conflict schedule if
(A) At level one of the operations is write operations
(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 items
Choose the correct answer from the options given below:
|A – (A) and (B) only|
|B – (A), (B) and (C) only|
|C – (A), (C) and (D) only|
|D – (C) and (D) only|