Computer Science for IGCSE & O level - Algorithm Design And Problem Solving (Section 8 - No. 12)
In the context of data validation, what is the central role of a check digit?
To guarantee the data is of the correct type.
To find errors, particularly those that may happen during data entry.
To make sure the data adheres to a predetermined structure.
To ascertain that every required field contains an entry.
Explanation
Check digits aid in error detection.
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