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

10th Class Computers Science Sample Paper Computer Science Olympiad Model Test Paper-1

  • question_answer
    Every table in relational database contain a field or combination of fields that can uniquely identify each records, it is called:

    A)  foreign key                   

    B)  native key

    C)  composite key  

    D)  primary key

    E)  None of these

    Correct Answer: D

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