Which of the following schedule is allowed under basic Timestamp protocol.
S1: R1(x) R3(x) W1(x) R2(x) W3(x) S2: R1(x) R3(x) W3(x) W1(x) R2(x) S3: R3(x) R2(x) W3(x) R1(x) W1(x) S4: R1(x) R2(x) R3(x) W1(x) W3(x)
How to proceed for checking each schedule as there is no timestamp has been given for each transaction in a schedule?
Ans given is S4 please clarify
@Magma
Can you explain how the answer is option $4$
