2. Sample Papers
  3. 10th Class
  4. Computers Science

10th Class Computers Science Sample Paper Computer Science Olympiad Model Test Paper-5

  • question_answer
    Given below are three statements. Which one of the following statements is correct?
    Statement I: Foreign key fields don't allow du- plicate values.
    Statement II: In primary key field you can enter duplicate values.
    Statement III: In primary key field no duplication values are allow.

    A)  Statement I is correct.

    B)  Statement II is correct.

    C)  Statement III is correct.

    D)  All are correct

    E)  None of these

    Correct Answer: C

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