Following is the schedule A for transactions T1, T2, and T3:

Tim T2 T3 write(X) read(Z) write(X) write(Z) read(Z) 6 write(Y) 9 write(X) 10 read(Y) 1) Assume that the system crashes at time 8, what should be done to recover the system? (3 marks) 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) Nne Wc aune i operations of it are done