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Database Management Systems · Quiz 2 · 12 Apr 2026 · January 2026 term · Set 1

Question 12: Consider a relation R(A,B,C,D,E) with the following func…

Question 12

+4 marksOne correct option

Consider a relation R(A,B,C,D,E) with the following functional dependency set: FD = {D → B, E → A, CD → E } If this relation is decomposed into R1(B,C,D,E) and R2(E,A), then which of the following statement(s) is/are true? Note: All intermediate steps/decomposition in the process of normalization must be loss less.

  1. A

    The decomposition is lossy but dependency preserving.

  2. B

    The decomposition is lossless and dependency preserving.

  3. C

    R1 is in 2NF and R2 is in 3NF.

  4. D

    Both R1 and R2 are in 2NF.

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Correct answer

  • B

    The decomposition is lossless and dependency preserving.

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Question 12 of 16 in the IIT Madras BS Database Management Systems (DBMS) Quiz 2 paper sat on 12 Apr 2026, in the January 2026 term (Business Data Management 06 Apr 26). It carries 4 marks.

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