Discussion
Selecting a data type involves which of the following?
Answer: C
Correct answer: Improve data integrity
Choosing a type that admits only the values the attribute can legitimately take is itself a constraint: a date column will not accept a non-date, and a numeric one will not accept text. The other options are the reverse of what is wanted - storage should be minimised, and a type admitting the widest range of values weakens the check.
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