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Which of the following query transformations (i.e., replacing the l.h.s. expression by the r.h.s. expression) is incorrect? R1 and R2 are relations. C1, C2 are selection conditions and A1, A2 are attributes of R1. a. σC1( σC2R1)) → σC2(σC1(R1)) b. σC1( πA1R1)) → πA1(σC1(R1)) c. σC1( R1 ∪ R2 ) → σC1(R1) ∪ σC1(R2) d. πA1(σC1(R1)) → σC1 (πA1 (R1))a)ab)bc)cd)dCorrect answer is option 'D'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about Which of the following query transformations (i.e., replacing the l.h.s. expression by the r.h.s. expression) is incorrect? R1 and R2 are relations. C1, C2 are selection conditions and A1, A2 are attributes of R1. a. σC1( σC2R1)) → σC2(σC1(R1)) b. σC1( πA1R1)) → πA1(σC1(R1)) c. σC1( R1 ∪ R2 ) → σC1(R1) ∪ σC1(R2) d. πA1(σC1(R1)) → σC1 (πA1 (R1))a)ab)bc)cd)dCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following query transformations (i.e., replacing the l.h.s. expression by the r.h.s. expression) is incorrect? R1 and R2 are relations. C1, C2 are selection conditions and A1, A2 are attributes of R1. a. σC1( σC2R1)) → σC2(σC1(R1)) b. σC1( πA1R1)) → πA1(σC1(R1)) c. σC1( R1 ∪ R2 ) → σC1(R1) ∪ σC1(R2) d. πA1(σC1(R1)) → σC1 (πA1 (R1))a)ab)bc)cd)dCorrect answer is option 'D'. Can you explain this answer?.

Solutions for Which of the following query transformations (i.e., replacing the l.h.s. expression by the r.h.s. expression) is incorrect? R1 and R2 are relations. C1, C2 are selection conditions and A1, A2 are attributes of R1. a. σC1( σC2R1)) → σC2(σC1(R1)) b. σC1( πA1R1)) → πA1(σC1(R1)) c. σC1( R1 ∪ R2 ) → σC1(R1) ∪ σC1(R2) d. πA1(σC1(R1)) → σC1 (πA1 (R1))a)ab)bc)cd)dCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Computer Science Engineering (CSE). Download more important topics, notes, lectures and mock test series for Computer Science Engineering (CSE) Exam by signing up for free.

Here you can find the meaning of Which of the following query transformations (i.e., replacing the l.h.s. expression by the r.h.s. expression) is incorrect? R1 and R2 are relations. C1, C2 are selection conditions and A1, A2 are attributes of R1. a. σC1( σC2R1)) → σC2(σC1(R1)) b. σC1( πA1R1)) → πA1(σC1(R1)) c. σC1( R1 ∪ R2 ) → σC1(R1) ∪ σC1(R2) d. πA1(σC1(R1)) → σC1 (πA1 (R1))a)ab)bc)cd)dCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Which of the following query transformations (i.e., replacing the l.h.s. expression by the r.h.s. expression) is incorrect? R1 and R2 are relations. C1, C2 are selection conditions and A1, A2 are attributes of R1. a. σC1( σC2R1)) → σC2(σC1(R1)) b. σC1( πA1R1)) → πA1(σC1(R1)) c. σC1( R1 ∪ R2 ) → σC1(R1) ∪ σC1(R2) d. πA1(σC1(R1)) → σC1 (πA1 (R1))a)ab)bc)cd)dCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Which of the following query transformations (i.e., replacing the l.h.s. expression by the r.h.s. expression) is incorrect? R1 and R2 are relations. C1, C2 are selection conditions and A1, A2 are attributes of R1. a. σC1( σC2R1)) → σC2(σC1(R1)) b. σC1( πA1R1)) → πA1(σC1(R1)) c. σC1( R1 ∪ R2 ) → σC1(R1) ∪ σC1(R2) d. πA1(σC1(R1)) → σC1 (πA1 (R1))a)ab)bc)cd)dCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Which of the following query transformations (i.e., replacing the l.h.s. expression by the r.h.s. expression) is incorrect? R1 and R2 are relations. C1, C2 are selection conditions and A1, A2 are attributes of R1. a. σC1( σC2R1)) → σC2(σC1(R1)) b. σC1( πA1R1)) → πA1(σC1(R1)) c. σC1( R1 ∪ R2 ) → σC1(R1) ∪ σC1(R2) d. πA1(σC1(R1)) → σC1 (πA1 (R1))a)ab)bc)cd)dCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Which of the following query transformations (i.e., replacing the l.h.s. expression by the r.h.s. expression) is incorrect? R1 and R2 are relations. C1, C2 are selection conditions and A1, A2 are attributes of R1. a. σC1( σC2R1)) → σC2(σC1(R1)) b. σC1( πA1R1)) → πA1(σC1(R1)) c. σC1( R1 ∪ R2 ) → σC1(R1) ∪ σC1(R2) d. πA1(σC1(R1)) → σC1 (πA1 (R1))a)ab)bc)cd)dCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Computer Science Engineering (CSE) tests.