Consider the following schedule of two transactions: R(B) B E 100 – B W(B) R(A) R(A) R(B) A E 10A + B B E 2B + A A € 30 + 7B W(A) W(A) W(B) Figure 3: Schedule of Q5(b). i. Result-serializability is when the result of a schedule is the same as some serial schedule. Given the initial values A = 10 and B = 20, show if this schedule is result-serializable or not. ii. Show how to add locks/unlocks to make the two transactions T1 and T, conflict serializable.

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