UGC NET Computer Science Q82

Question

Consider the transactions T1, T2, T3 and the schedules S₁ and S₂ given below.
T₁: r₁(x); r₁(z); W₁(z)
T2: r2(y); r2(z); W₂(z)
T3: r3(y); r3(x); W3(y)
S₁: r₁(x); r3(y); r3(x); r2(y); r2(z); W3(y); W3(z);
r₁(z); W₁(x); W₁(z)
S2: r₁(x); r3(y); r2(y); r3(x); r₁(z); r2(z); W3(y);
W₁(X); W₂(z); W₁(z)
Which one of the following statements about the schedules is TRUE ?

Accepted Answer

Both S₁ and S₂ are conflict-serializable