Consider the following statements:
Statement I: Conservative 2 PL is a deadlock-free protocol.
Statement II: Thomas's write rule enforces conflict serializability.
Statement III: Timestamp ordering protocol ensures serializability based on the order of transaction timestamps.
Which of the following is correct?
1
Statement I, Statement II true and Statement III false
2
Statement I, Statement III true and Statement II false
3
Statement I, Statement II false and Statement III true
4
Statement I, Statement II and Statement III true