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Write short notes on transaction state?
A transaction may not always complete its implementation successfully such a transaction is termed aborted
A transaction must be in one of the following states
Active
Partially committed
Failed
Aborted
Committed
In Database software have only pure security or some dis secured by administrator?
Compare the two log-based recovery schemes in terms of ease of implementation and overhead cost. Ans: There are two types of log based recovery techniques: deferred update
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explain in detail about time stamp orderting/
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The Maximum no of key fields that can be used in a header is?? 50
what is multivalued dependency
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