Question

The relationship between view and conflict equivalence is the same under which assumption?

1) If T writes X, it is constrained by the value of X it read
2) If T writes X, it is not constrained by the value of X it read
3) If T writes X, it is constrained by the value of Y it read
4) If T writes X, it is not constrained by the value of Y it read

Answer 1

The relationship between view and conflict equivalence remains the same when a transaction's write operation on a data item is not constrained by the value it previously read for that same data item.

Step-by-step explanation:

The relationship between view and conflict equivalence is the same under the assumption that if a transaction writes a data item X, it is not constrained by the value of X it reads. This means that the transaction's action of writing X does not depend on any particular value it might have read for X. Hence, the correct answer is option 2: "If T writes X, it is not constrained by the value of X it read." In this scenario, the operations are commutative and can be reordered without affecting the final state, which is why the relationship is maintained.