Consider the following schedule of transactions T1, T2, T3 and T4.
T2: R(Y) T2: R(X); T3: R(X); T3: commit; T1:W(X); T2:W(Y); T2: R(z); T2: commit; T4: R(X); T4: R(Y); T1:W(Z); T1:commit; T4:commit.
Which of the following is correct about this?1
S is conflict serializable
2
S is recoverable
3
S is cascadeless
4
None of these