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Question 8 (5 pts) Consider the following order of operation requests from transactions TI,T2,T3. r1 (A) r2(A) r3(A) r1(B) r2(B) w1(B) shared, Show he resulting schedule table when we have a scheduler that supports and update locks.

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Answer #1

Answer:

Below is the given schedule for above question

T1 T2 T3

sl-1(A)

r1(A)

sl-2(A)

r2(A)

sl-3(A)

r3(A)

sl-1(B)

r1(B)

sl-2(B)

r2(B)
xl-2(B)

xl-1(B)

w1(B)

w1(B)

u1(B)

u1(A)
xl-1(A)
xl-3(A)

xl-2(A)

w1(A)
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