super market, Database Management System

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gaps in sequence values can happen when-sequences, Gaps in sequence values...

Gaps in sequence values can happen when: -     A rollback happens that is when a statement changes are not accepted. -     When the system crashes -     When a sequence i

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What is average response time? The average response time is that the average time for a transaction to be done after it has been submitted.

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why shadow copy technique is used?

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