Question: Does the following partial schedule S obey two phase locking? If it does not, change it to obey two phase locking. T1 T2 Lock-X(B) Read(B)

Does the following partial schedule S obey two phase locking? If it does not, change it to obey two phase locking.

T1

T2

Lock-X(B)

Read(B)

Write (B)

Lock-X(A)

Lock-S(A)

Read(A)

Unlock(A)

Lock-S(B)

Read(B)

Unlock(B)

Unlock(B)

Read(A)

Write(A)

Unlock(A)

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