The occurs when more than one occurrence of a specific data item in a database exists.

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The correct answer was given: etuck16
The update anomaly occurs when more than one occurrence of a specific data item in a database exists.    update anomaly  happens when one or more instances of doubled data is  updated, but not all. it is  is a data discrepancy which  resulted from data that is  no longer needed or useful..

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The correct answer was given: Brain
No they don’t require one

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The correct answer was given: Brain
It needs a new battery or it is old

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