Consider a relation schema R = (X, Y, Z) on which the following functional dependencies hold: {XY → Z, Z → X}. Show that the schema R is not in BCNF (Boyce-Codd Normal Form) but it is in 3NF (Third Normal Form).

Q: Let X = {0, 1}. (a) List (as subsets of X X X) all possible relations on X. This answer has not been…

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Q: Which of the followings can possibly be a canonical cover Fc of a set F of functional dependencies?…

A: The answer to this question is option b) {A → D, AB → C, D → B} and d) {A → C, D → B, AB → C}

Q: 3. Given a relation R( A, B, C, D) where FDs ans CKs are such : FDs AB -> C, BC -> D, CD -> A CKs АB…

A: Here in this question we have given a relation R and we have asked to check highest normal form in…

Q: Consider a relation with schema R(A,B,C,D,E,G) and functional dependencies (FDs) C→D; B→A; D→E; E→G…

A: Answer is given below .

Q: Let R(A,B,C,D) be a relation with the set of functional dependencies F={AB->C,C->D). Decompose the…

A: Answer is

Q: Consider the set of F of the following functional dependencies on relation R(A, B, C, D, E): AB C…

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Q: Consider the relation R = {A, B, C, D, E, F, G, H, I,J} and the set of functional dependencies F = {…

A: f ={     AB → C,      A → D,      B → F,  F → GH,  D → IJ   } To find the key check the RHS of the…

Q: Courses(C, T, H, R, S, G) Relation and  F={C→T ,HR→C, HT→R, HS→R,CS→G} is given. What is the…

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Q: Let R(A, B, C, D, E, F) be a relation with FD's: {D→ CE, C-→ BDE, E→ AD, AF→ E, B→ D}. Which of the…

A: The given functional dependency is, { D -> CE , C -> BDE , E -> AD , AF -> E , B -> D…

Q: The relation R defined on ℝ  where aRb if and only if a< b is an equivalence relation.  True or…

A: Given: The relation R defined on ℝ  where aRb if and only if a&lt; b is an equivalence relation.…

Q: Find a minimal cover in a standard form for the relation schema R(A, B,C, D, E, F, G, H) with the…

A: A minimal cover or canonical cover means a minimum set of functional dependencies. A canonical cover…

Q: Assume you apply a functional dependence in the BCNF decomposition technique to deconstruct a…

A: Intro Assume you apply a functional dependence in the BCNF decomposition technique to deconstruct a…

Q: Problem 3 Consider the relation R = {A, B, C, D, E, F,G, H, I, J} and the set of functional…

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Q: Consider the schema R=ABCDEG and the set of functional dependencies F={BC→AG, BG→CD, C→AE, D→AG} 2a)…

A: To address each part of your question:2a) Determine the keys of the schema:To find the keys of the…

Q: 1. If we project the relation R(A,B,C,D,E) with dependencies A→→BC, B→D, and C→→E onto S(A,C,E),…

A: Answer is given below-

Q: 2. Relation R(a,b) contains the following tuples: (1,2), (1,3), (1,4), (2,3), (3,4). and (4,5).…

A: The Answer is in Below Steps

Q: Comment say : True / False. whether the decomposition of R ( A, B, C,D , E , G) in (ABCE , BD , AEG…

A: Introduction : Given , Relational Schema R(A,B,C,D,E,G).And its functional dependencies are also…

Q: We studied different properties of relations like reflexive, symmetric, antisymmetric, transitive.…

A: Lets see the solution in the next steps

Q: Consider a relation schema R = (X, Y, Z) on which the following functional dependencies hold: {XY-Z,…

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Q: . Consider the following relation with set of functional dependencies R(ABCDEF) ABC->D, ABD->E,…

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Q: Write the relation matrix for the Boolean nor. What is the identity for nor?

A: A logical matrix, binary matrix, relation matrix, Boolean network, or (0,1) matrix is a matrix with…

Q: Question 1: FDs and Keys (a) Consider a relation schema R(A, B, C, D, E), and the set of…

A: Here in this question we have given a relation R. And also given set of functional dependenciesF =…

Q: Consider a relation R={A,B,C,D,E,F,G,H,I} with the set of functional dependencies and determine,…

A: Now we must determine the above definition whether for each FD. Each value is super key or not on…

Q: 5. Let R = (A, B, C, D, E) be a relation scheme with the following dependencies- AB → C C → D B→ E…

A: For the given relation R = (A,B,C,D,E) we are gien three dependencies. AB-&gt;C C-&gt;D B-&gt;E   We…

Q: Write the relation matrix for the relation R on the set (a,b.c.d,e.f) which is defined as follows:…

A: Relation Matrix: Any relation can be represent using the matrix representation. The matrix contain…

Q: Consider the following set F of functional dependencies on the relation schema R = (A, B, C, D, E,…

A: a) Candidate Key : Minimal set of attributes used to differentiate every record of the table is…

Q: Given the relation R (A, B, C, D, E) and the following set of functional dependencies: F = {ABC,…

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