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One common design problem when designing a database from existing data is the use of a general-purpose remarks column in the received data.

  • A.True
  • B.False

Answer: A

Correct answer: True

A general-purpose remarks column collects whatever users think worth noting, so it holds different kinds of fact in different rows, in free text that cannot be validated or queried. It is one of the standard problems in received data, and the remedy is to identify what is actually being recorded there and give each item a column of its own.

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