Consider the following schedule that performs actions taken by transactions T1 and T2 on database objects A and B :
T1: S(A), R(A), X(B), U(A), R(B),W(B), Commit: U(B)
T2: S(B), R(B), X(A), U(B), R(A), W(A), Commit: U(A)
Because Strict 2PL is using, this schedule is guaranteed to be conflict serializable.
A: True
B:False
Answer: True
Explanation: Strict 2PL always guarantees conflict serializability.
Thanks, PLEASE COMMENT if there is any concern.
Consider the following schedule that performs actions taken by transactions T1 and T2 on database objects...
Consider the following schedule that performs actions taken by transactions 71 and T2 on database objects A and B: T1: R(A), WA), RIC), W(B), Commit R(B), W(B), Commit The above schedule results in an) T2: OA cascading aborts OB write-read conflict write-write conflict OD read-write Conflict
Consider the following schedule. The actions are prefixed with the transaction name and are listed in the order they’re scheduled. S: T2:R(Y), T1:R(X), T1:W(X), T3:R(Y), T3:W(X), T1:W(Z), T2:R(X), T3:R(Z) a. Draw the dependency graph for S. b. Is S serializable? c. Is S conflict serializable? If so, what is the conflict equivalent serial schedule?
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