samedi 25 avril 2015

Rollback and Scheduling in Database?


If we use the Timestamp Ordering for concurrency control in following scheduling:

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My TA says T2,T3,T5 is Run and T4,T1 is Rollback. I think it's false. any expert could help us? (i.e, in this schedule which of the Transaction Rollback and which one Is Done?

Update: All transaction after doing all work, commits.


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