Q. Which of the following is a valid constraint in MySQL?

  • (A) NONEMPTY
  • (B) REQUIRED
  • (C) NOT NULL
  • (D) EMPTY
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✅ Correct Answer: (C) NOT NULL
Explanation: `NOT NULL` ensures that a column cannot have a NULL value.

Published by Mr. Dubey ⭐ 111.42K Points at 06-Jun-2025 09:40 pm in MySQL

Explanation by: Mr. Dubey
`NOT NULL` ensures that a column cannot have a NULL value.

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