GATE Exam  >  GATE Questions  >   Consider the following statements given belo... Start Learning for Free
Consider the following statements given below:
S1: There is always a lossless, dependency preserving BCNF decomposition.
S2: Any relation with two attributes is in BCNF.
S3: For two relations R(A, B) and functional dependency F = {A → B} and S(B, C) and functional dependency F = {B → C}, natural join is in BCNF.
Which of the following statements are true?
  • a)
    S1 and S2 only
  • b)
    S2 and S3 only
  • c)
    S1, S2 and S3
  • d)
    None of the above
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Consider the following statements given below:S1: There is always a l...
S1 : Lossless dependency preserving BCNF decomposition is not always possible. S1 false
S2 : With two attributes a relation is always in. BCNF. S2 true
R(A, B)
A → B, B → A
Both A and B are key for R.
S3 : The natural join of R and S will have functional dependencies A → B and B → C, which is not in BCNF. S3 false
So option (D) is correct.
View all questions of this test
Explore Courses for GATE exam
Consider the following statements given below:S1: There is always a lossless, dependency preserving BCNF decomposition.S2: Any relation with two attributes is in BCNF.S3: For two relations R(A, B) and functional dependency F = {A → B} and S(B, C) and functional dependency F = {B → C}, natural join is in BCNF.Which of the following statements are true?a)S1 and S2 onlyb)S2 and S3 onlyc)S1, S2 and S3d)None of the aboveCorrect answer is option 'D'. Can you explain this answer?
Question Description
Consider the following statements given below:S1: There is always a lossless, dependency preserving BCNF decomposition.S2: Any relation with two attributes is in BCNF.S3: For two relations R(A, B) and functional dependency F = {A → B} and S(B, C) and functional dependency F = {B → C}, natural join is in BCNF.Which of the following statements are true?a)S1 and S2 onlyb)S2 and S3 onlyc)S1, S2 and S3d)None of the aboveCorrect answer is option 'D'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about Consider the following statements given below:S1: There is always a lossless, dependency preserving BCNF decomposition.S2: Any relation with two attributes is in BCNF.S3: For two relations R(A, B) and functional dependency F = {A → B} and S(B, C) and functional dependency F = {B → C}, natural join is in BCNF.Which of the following statements are true?a)S1 and S2 onlyb)S2 and S3 onlyc)S1, S2 and S3d)None of the aboveCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements given below:S1: There is always a lossless, dependency preserving BCNF decomposition.S2: Any relation with two attributes is in BCNF.S3: For two relations R(A, B) and functional dependency F = {A → B} and S(B, C) and functional dependency F = {B → C}, natural join is in BCNF.Which of the following statements are true?a)S1 and S2 onlyb)S2 and S3 onlyc)S1, S2 and S3d)None of the aboveCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Consider the following statements given below:S1: There is always a lossless, dependency preserving BCNF decomposition.S2: Any relation with two attributes is in BCNF.S3: For two relations R(A, B) and functional dependency F = {A → B} and S(B, C) and functional dependency F = {B → C}, natural join is in BCNF.Which of the following statements are true?a)S1 and S2 onlyb)S2 and S3 onlyc)S1, S2 and S3d)None of the aboveCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for GATE. Download more important topics, notes, lectures and mock test series for GATE Exam by signing up for free.
Here you can find the meaning of Consider the following statements given below:S1: There is always a lossless, dependency preserving BCNF decomposition.S2: Any relation with two attributes is in BCNF.S3: For two relations R(A, B) and functional dependency F = {A → B} and S(B, C) and functional dependency F = {B → C}, natural join is in BCNF.Which of the following statements are true?a)S1 and S2 onlyb)S2 and S3 onlyc)S1, S2 and S3d)None of the aboveCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Consider the following statements given below:S1: There is always a lossless, dependency preserving BCNF decomposition.S2: Any relation with two attributes is in BCNF.S3: For two relations R(A, B) and functional dependency F = {A → B} and S(B, C) and functional dependency F = {B → C}, natural join is in BCNF.Which of the following statements are true?a)S1 and S2 onlyb)S2 and S3 onlyc)S1, S2 and S3d)None of the aboveCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Consider the following statements given below:S1: There is always a lossless, dependency preserving BCNF decomposition.S2: Any relation with two attributes is in BCNF.S3: For two relations R(A, B) and functional dependency F = {A → B} and S(B, C) and functional dependency F = {B → C}, natural join is in BCNF.Which of the following statements are true?a)S1 and S2 onlyb)S2 and S3 onlyc)S1, S2 and S3d)None of the aboveCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Consider the following statements given below:S1: There is always a lossless, dependency preserving BCNF decomposition.S2: Any relation with two attributes is in BCNF.S3: For two relations R(A, B) and functional dependency F = {A → B} and S(B, C) and functional dependency F = {B → C}, natural join is in BCNF.Which of the following statements are true?a)S1 and S2 onlyb)S2 and S3 onlyc)S1, S2 and S3d)None of the aboveCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Consider the following statements given below:S1: There is always a lossless, dependency preserving BCNF decomposition.S2: Any relation with two attributes is in BCNF.S3: For two relations R(A, B) and functional dependency F = {A → B} and S(B, C) and functional dependency F = {B → C}, natural join is in BCNF.Which of the following statements are true?a)S1 and S2 onlyb)S2 and S3 onlyc)S1, S2 and S3d)None of the aboveCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice GATE tests.
Explore Courses for GATE exam
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev