A six - digit card field used for postal ZIP codes is defined as___________________?
Correct answer: B. A numeric field
- A. An alphanumeric field
- B. A numeric field
- C. A letter field
- D. A alphabetic field
Explanation
A six-digit ZIP code contains digits only, so it is classified as a numeric field in this basic data-field classification. In practical database design, ZIP codes are often stored as text to preserve leading zeros.
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