Question 2 (6 marks) Following is the schedule A for transactions T?, T2, and Ts: Schedule A Time1ransaction T? T3 T2 read(Z) 3 read(X) write(Z) read(Z) read(Z) read(Y) 9 write read(x) 10 read(Y) Assume that the system crashes at time 8, what should be done to recover the system? (3 marks) 1) 2) Assume a checkpoint is made at time 7, what should be done to the three transactions when the crash happens at time 8? (3 marks) Note: We assume a transaction will be committed immediately after all the read/write operations of it are done