What is the highest level of isolation in transaction management ?

I am confused regrading the significance of checkpoint i.e. is it that whenever we place checkpoint does that mean that all the data items before it have been written ont...

radha gogia

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radha gogia asked Sep 9, 2015

Databases
databases

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radha gogia asked Aug 25, 2015

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what is the actual meaning of rollback in a transaction ?
we say that when any transaction is rolled-back that means it would be re-started again , so lets say if T2 reads a data item from T1 , perform some computation on it and then writes it back onto disk and after some T1 fails , ... set to its initial value or since T1 is restarted again it would be set to the value as computed by T1 again ?

we say that when any transaction is rolled-back that means it would be re-started again , so lets say if T2 reads a data item from T1 , perform some computation on it and...

radha gogia

407 views

radha gogia asked Aug 25, 2015

Databases
databases

+ –

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