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21. The employee salary should not be greater than Rs. 2000. This is
integrity constraint
referential constraint
over-defined constraint
feasible constraint
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22. Which of the following contains a complete record of all activity that affected the contents of a database during a certain period offtime
Report writer
Query language
Data manipulation language
Transaction log
23. Transaction processing is associated with everything below except
Producing detail, summary, or exception reports
Recording a business activity
Confirming an action or triggering a response
Maintaining data
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