The following table describes the scheduling under timestamp ordering agreement in the execution of the transaction, please fill out A form at all time points, the transaction after the T1 or T2, the timestamp in the corresponding row in the table (A) and W - TS R - TS (A) how much is the value of the respectively? Among them, the first line says initial state, need to fill in the initial state of two time stamps the value of the
More stupid, bother everybody to help see table how to fill in, best slightly, thanks!
CodePudding user response:
Didn't understand, feeling is algorithm, look not to understand!CodePudding user response:
Beginner database, don't have to study so at the bottom of the thing,CodePudding user response:
This is the scheduling of serializable sequence diagram with lock,More abstract, the difficulty is not low,