GATE | IT | 2004 | DBMS | Transactions | Question 77

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Consider the following schedule S of transactions T1 and T2:

T1T2
Read(A)A = A - 10Read (A)Temp = 0.2*A Write(A) Read(B)
Write(A)Read(B) B = B + 10 Write(B)B = B + TempWrite(B)

S is serializable only as T1, T2

S is serializable only as T2, T1

S is serializable both as T1, T2 and T2, T1

S is serializable either as T1 or as T2

None of these

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