Question 1: [7 marks] In table 01, there are two transactions T1 and T2 running some read and write operations in an interleaved manner. After each operation, what will be the values of X,Y, and Z in the system log and in the database? Note that the recovery technique used is "deferred update". Moreover, before T1 and T2, the values of X, Y, and Z in the database are: X0=20,Y0=18,Z0=3