Consider a relation schema R = {A, B, C, D, E} and its functional dependency set F = {A → B,CD → E,B →D,E → A}. Compute A+ and choose the answer. (a) A+ = AB (b) A+ = ABC (c) A+ = ABCD (d) A+= ABCDE (e) none of the above

Q: Here's a relation (R), its attributes and its functional dependencies (F): R(A, B, C, D, E, F, G)…

A: Given functional dependencies: BC -> DG CD -> F FG -> A 1. Closure of {ACD}+ is: {ACD}+ =…

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: Primary key of this relation is AB. What is the normal form of this relation given the following…

A: Given all attributes are atomic, hence it is in first normal form.   Primary Key is AB. So prime…

Q: 3. Disprove the following rule: {B > CD, AB → E, E → C} |= {AE → CD} To disprove a rule, construct a…

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Q: Given the functional dependency (A, B) C and BCthen it is true that AC O True O False

A: It is False

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: Exercise 3.2.1: Consider a relation with schema R(A, B, C, D) and FD’s AB → C, C → D, and D → A. a)…

A: Answer : For the single attributes we have {A}+= A, {B}+= B, {C}+= ACD, and {D}+=AD. Thus, the only…

Q: Consider the following functional dependencies for a relation R(A, B, C, D) A -> (B, C, D), (A, D)…

A: Given relation with functional dependencies is: R(A, B, C, D) A -> (B, C, D), (A, D) -> (B, C)…

Q: Let R(A,B,C,D,E,F,G) be a relation with the FDs: F= (CDG, DG-C, AD-G, G-A, AB-F). Consider the…

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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: 1. Given a relation model R, where U = {A, B, C, D, E}, F = {A->BC, C->D, BC->E, E->A}. The…

A: Note:- Please send the question once again if you wish to answer another question, as set out in the…

Q: Assume a relation schema R(a, b, c, d, e, f) with primary key (a, b) and the following full func-…

A: Functional Dependencies:- Functional dependencies are the result of the interrelationship between…

Q: dentify the set of functional dependencies in the relation instance CAR shown n

A: Actually, data base is used to stores the data.

Q: QUESTION 8 Here's a relation (R), its attributes, and its functional dependencies (F): R(A, B, C, D,…

A: A functional dependency is defined as if in a relation A→B , the values in attribute A have the same…

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: Now start with these functional dependencies: АВ > Е C → D F → GH FG → GH В > FG Find a minimal…

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Q: Question 3 Consider a relation A(P, Q, R, S, T) with following functional dependencies. i.Р— QR ii.…

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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: Given a relation schema R = (A, B, C) and its functional dependencies F = {A →B, B→ C). Suppose R is…

A: Answer is given below-

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Q: Could you tell a step by step procedure of finding a super key for A relation R(A,B,C,D, E) having…

A: Solution - In the given question, we have to find the super key of the given relation R(A,B,C,D,E).…

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

A: This answer will demonstrate that the given relation schema R = (X, Y, Z) with functional…

Q: g set of five functional dependencies which hold on R: A → B A C BD → E EC → A E →G ompute the…

A: Closure (CE) = { C, E, G, A, B} Closure (AD) ={A, D, B, C, E, G}

Q: Consider the relation R = {F, T, D, N, S} and the set of functional dependencies K = {F¬D, {D, T}…

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Q: Consider a relation consisting of the attributes A, B, C, with the following set of functional…

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Q: Which of these FDs hold on the

A: Functional dependency: The columns of a relational table are functionally dependent on another…

Q: Consider a relation schema R = {M, N, P, Q, S} and its functional dependency set F = {N → Q,S → M,M…

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Q: Let's suppose, a relation R=(A, B, C, D, E. H) with a set of functional dependencies F: (AE->BC, B…

A: Functional dependency is a DBMS concept . In this attributes of relations  are dependent on each…

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

A: Here in this question we have given a relation schema R = (X, Y, Z) on which the following…

Q: Suppose you are given a relation R = (A,B,C,D,E) with the following functional dependencies: {CE ->…

A: Solution:   Given, Relational Schema- R{A, B, C, D, E} List of functional Dependencies are- CE…

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

A: