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Business Data Management · End Term · 21 Dec 2025 · September 2025 term

Question 2: A "Left Join" between Table A (100 rows) and Table B (100…

Question 2

+1 markOne correct option

A "Left Join" between Table A (100 rows) and Table B (100 rows) results in a table with 105 rows. What does this definitely prove?

  1. A

    The join condition was wrong.

  2. B

    Table A has duplicate keys matching records in Table B

  3. C

    Table B has duplicate keys matching records in Table A.

  4. D

    It is impossible; a Left Join cannot exceed the row count of the left table.

Show answer

Correct answer

  • C

    Table B has duplicate keys matching records in Table A.

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Question 2 of 50 in the IIT Madras BS Business Data Management (BDM) End Term paper sat on 21 Dec 2025, in the September 2025 term (Business Data Management 18 Dec 25). It carries 1 mark.

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