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testseries

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consider the log of transaction given below

<T0,START>

<T0,S,1000,2000>

<T0,H,2,3>

identify the correct actions which are part of undo(T0) ??

 

H is restored to 3.

S is set to 1200.

H is restored to 1000

<T0,S,1000,2000>  log record is written out..
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