Suppose there are Two accounts A=700 and B=900 in a database . and we are going to move 300 from A to B , and also move 30% of A to B correspondingly . Please write two different Schedules (serial and parallel) so that both of them be correct ?

Example Schedules Let transaction T, transfer 700 Euro from account A to B and T, transfer 10% of the balance from A to B critical are the read (R) and write (W) operations Schedule 1 T, R(A) A=A-700 W(A) R(B) B=B+700 WIB) T R(A) t=A0.1 A=A-WA) R(B) B=B+tW(B) serial schedule where T, is followed by T, Schedule 2 T. R(A) A=A-700 WA) R(B) B=B+700 WIB) T. R(A) t-A-0.1 A-A-t W(A) R(B) B-B+t W(B) non-serial schedule but equivalent to Schedule 1