Question: 3. Consider the following two transactions: T2 read(B) read(A) write(A) TI read(A) write (B) (a) Add lock and unlock instructions to transactions Ti and T2,

3. Consider the following two transactions: T2 read(B) read(A) write(A) TI

3. Consider the following two transactions: T2 read(B) read(A) write(A) TI read(A) write (B) (a) Add lock and unlock instructions to transactions Ti and T2, so that they observe the two-phase locking policy (b) Give an interleaved legal schedule of 2PL transactions Ti and T2. (c) Can the execution of these two transactions result in a deadlock? If yes, give an example of a partial schedule that results in a deadlock

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