Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) DBMS Concurrency Control Timestamp Based Ordering Protocol
In basic timestamp ordering scheme, say a transaction T issues write (Q) operation, then which of the following is true? (TS: time stamp)
1
If TS (T) < Read-TS (Q), then write is rejected and T is rolled back
2
If TS (T) < write-TS (Q), then write is rejected and T is rolled back
3
Both (A) and (B)
4
None of these