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Prove that all regions of the diagram are non - empty sets by providing example histories H 1 - H 1 2 answer should be
Prove that all regions of the diagram are nonempty sets by providing example histories HH
answer should be similar to the below
T wx wy wz c
T ru wx ry wy c
And also consider the following four histories over transactions T and T:
H wx wy ru wx ry wy c wz c
H wx wy ru wx ry wy wz c c
H wx wy ru wx wz c ry wy c
H wx wy ru wz c wx ry wy c
H is not Recoverable RC
H is Recoverable RC but not Avoids Cascading Aborts ACA
H is Avoids Cascading Aborts ACA but not Strict ST
H is Strict ST
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