# Choose which of the following histories will result with 2PL and a cautious wait strategy. The follwoing is order of operations as given to the scheduler

Question 1:

Choose which of the following histories will result with 2PL and a cautious wait strategy. The follwoing is order of operations as given to the scheduler.

r1(x); w1(x); r2(y); w2(x); r3(z); w1(z); c1; c2; c3

a. r1(x); w1(x); r2(y); w2(x); r3(z); w1(z); c1; c2; c3

b. r1(x); w1(x); r2(y); a2; r3(z); c3; w1(z); c1; c2

c. r1(x); w1(x); r2(y); r3(z); c3; w1(z); c1; w2(x); c2

Question 2

T1 is going to read all the students from the student table who live in the state of MO. Show the lock the table with predicate locking.

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