WebNov 19, 2014 · Consider the universal relation R = {A, B, C, D, E, F, G, H, I, J} and the set of functional dependencies F = { {A, B}→ {C}, {A}→ {D, E}, {B}→ {F}, {F}→ {G, H}, {D}→ … WebJun 1, 2024 · Discuss Consider a relation R (A, B, C, D, E, F, G, H), where each attribute is atomic, and following functional dependencies exist. CH → G A → BC B → CFH E → A F → EG The relation R is __________ . (A) in 1NF but not in 2NF (B) in 2NF but not in 3NF (C) in 3NF but not in BCNF (D) in BCNF Answer: (A) Explanation: If we find closure of A:
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WebConsider the set of relations shown below and the SQL query that follows. Students: (Roll_number, Name, Date_of_birth) Courses: (Course number, Course_name, Instructor) Grades: (Roll_number, Course_number, Grade) select distinct Name from Students, Courses, Grades where Students. Roll_number = Grades.Roll_number and … WebConsider the relation schema R(A, B, C, D, E, F) and the set S = {AB->C, BC->AD, D->E, C->B) of functional dependencies. Assuming that R is decomposed into the relation …
WebDec 29, 2024 · Decomposing attributes based on relations partially dependent on the key gives: R1 = {A, B, C} R2 = {B, D, E, F} R3 = {A, D, G, H, J} R4 = {A, I} R5 = {A, B, D} … WebFeb 22, 2016 · A portal for computer science studetns. It hosts well written, and well explained computer science and engineering articles, quizzes and practice/competitive programming/company interview Questions on subjects database management systems, operating systems, information retrieval, natural language processing, computer …
WebConsider the relational schema given below, where eId of the relation dependent is a foreign. key referring to empId of the relation employee. Assume that every employee … WebAnswer: Explanation: To avoid violating A → B, the new tuple either has to disagree with (0,0,0) on A (that is, the first component of the new tuple is not 0), or it must agree on B (i.e., the second component must be 0). In other words, the new tuple must be of the form (0,0,w), or (x,y,z) where x ≠0.
WebConsider the relation scheme R = (E, F, G, H, I, J, K, L, M, N) and the set of functional dependencies {{E,F} → {G}, {F} → { I,J } , { E, H } → { K, L } , { K Back to feed Member at …
WebGiven a R(A,B,C,D) with the following FDs: AB->D BC->A AD->B CD->B AD->C Choose a correct statement about R: The FD set of R is not canonical and R is in BCNF Consider … hilleberg anjan 2 footprintWebrelation R(A,B,C,D,E,F,G,H) with the following functional dependencies: A → BCD AD → E EFG → H F → GH (a) Based on these functional dependencies, there is one minimal key What is it? (b) One of the four functional dependencies can be removed without Which one? 5. relation R(A,B,C,D,E,F) with the following set of functional hilleberg anjan 3 gtWebApr 18, 2014 · First Method: Using the given options try to obtain closure of each options. The solution is the one that contains R and also minimal Super Key, i.e Candidate Key. … (A) S1 is TRUE and S2 is FALSE. (B) Both S1 and S2 are TRUE. (C) S1 is FALSE … ez tack holsterWebQuestion 24 Not yet answered Consider the relation scheme R={A, B, C, D, E, F, G, H, I, J} with the following set of functional dependencies: F = {ABC, D, EFG- H, 13+ AE, A- BI, … hilleberg biwakWebConsider the relation scheme R(E, F, G, H, I, J, K, L, M, N) and the set of functional dependencies-{ E, F } → { G } { F } → { I , J } { E, H } → { K, L } { K } → { M } { L } → { N } … hilleberg biwaksackWebQuestion: Consider the following database schema: R (A, B, C, D, E, F, G, H, I) with the set of functional dependencies {A → E, AD → BE, AC → E, E → B, BG → F, BE → D, BDH → E, F → A, D → H, CD → A} 4.1 Find the candidate keys of this schema. hilleberg ebayWeb2) Choose the most appropriate word from the options given below to complete the following sentence. He could not understand the judges awarding her the first prize, because he thought that her performance was quite. . . . . . . . . . . . ez tac holsters