Transaction self doubt

Question

Is it recoverable and why?

Comments

does the dirty read not count from t2 to t3

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@Harshitkmr  no it doesnt count because T1 has written after T2.T3 is reading the value written by T1 not T2

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ok leaving this aside   while constructing precedence graph for cs schedules we would still take t2 to t3 conflict right?

Answer 1

It is recoverable because T3 need a data item X that was previously written by T1 condition is that  the commit operation of T1 should appear before the commit operation of T3 .that is true so recoverable.