Multiple choice

Which of the following is correct about NOT NULL constraint?

A. NOT NULL constraint demands a column not to accept NULL values. B. NOT NULL constraint demands a field to always contains some value. C. One cannot insert a new record with a NULL value, when NOT NULL constraint is specified.

  1. A is correct

  2. B is correct

  3. C is correct

  4. None of A, B and C are correct

  5. All A, B and C are correct
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

All A, B and C are correct. Option 5 is the correct answer.

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