Consider the relation R (A, B. C, D) with the functional dependencies (A)->[B) and (C)->D). Which is a candidate key: O IA. C) O IA DI O IA

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: Give a 3NF decomposition of the given schema based on cover. Give a BCNF decomposition of the given…

A: GIVEN: The set F of functional dependencies on the relation schema r(A, B, C, D, E, F): A → BCD…

Q: Relation R has eight attributes ABCDEFGH. Fields of R contain only atomic values. F = {CH -> G, A ->…

A: Actually, given information Relation R has eight attributes ABCDEFGH. Fields of R contain only…

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: The relation R(A,B,C,D,E) has the following functional dependencies. A, B --> C B, C --> D C, D…

A: Answer for (A) and (B):

Q: Consider the relation r(A,B ) with the following instance of r. Which of the functional dependencies…

A: Rules to check valid functional dependency from   α -> β   Check if all the values of α are…

Q: • Let A be the set A={a,b,c,d} and R is a relation on set A, where R= { (a,a), (a,b) ,(b,a),(b,b),…

A: A = {a,b,c,d} R= {(a,a),(b,a),(b,b),(c,d),(c,c),(d,d)}

Q: а. Compute B+. b. Prove (using Armstrong's axioms) that AG is a superkey. Compute a canonical cover…

A: Hey there, I am authorised to answer 1st 3 part of the question at a time when there are multiple…

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: Suppose we have the following relation schema R and set of functional dependencies F: R = (A, B, C,…

A: Here in this question we have a relation R (A B C D E F G) and some FDs also given there.and we have…

Q: Given the following relation R and its functional dependencies, what is the key of R? R(A, B, C, D,…

A: Key is basically which closure determines all the attributes A-->B B-->E E-->C Using…

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

A: Relation: f a purposeful dependency X->Y holds true whereverY isn't a set of X then this…

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 relation schema R (A, B, C, D) with all possible functional dependencies. For each of…

A: 1. A, C -> B, D C -> D Here the key for the relation is (AC)  The FD C->D is a partial…

Q: Consider a relation schema R = {A, B, C, D, E, F, G} with the following set of functional…

A: A relational schema R with the set of functional dependencies

Q: Consider the relation schema R(A, B, C, D, E, F) and the set S = {AB->C, BC->AD, D->E, C->B) of…

A: ANSWER:-

Q: Which of these FDs hold on the

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

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: 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: What is the highest normal form for the following relation and its functional dependencies? Assume…

A: A(x , w ,z) x->w functional dependency  is a relationship between two attributes, typically…

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

A: Relation R which is defined functional dependencies

Q: let R be a relation defined on the set z by aRb if a < b. What property/properties are violated? A.…

A: EXPLANATION: Any relation R that is defined on a set A can be reflexive or symmetric or transitive…

Q: Given the reation R (A, B, C, D , E), with functional dependencies: A, B -> C D, E -> C B -> D…

A: We have a relation R(A,B,C,D,E) and we have to decompose it into BCNF and check dependency…

Q: Consider the Relation R4 = (A,C,B,D,E,F), with Functional Dependencies: A -> B, C -> D, E -> D. What…

A:

Q: Consider the relation R(A,B,C,D,E,F,G) with the following functional dependencies: A-CDE, B F.…

A: Given Data : Relation :- A,B,C,D,E,F,G Dependency :- A-&gt;CDE , B-&gt;F

Q: 1. Consider the relation R on the set (a,b.c,d,e,f] which is defined as follows: R-[(a,a), (a,b).…

A: Here in this question we have given a set and a relation is also defined on this set.and we have…

Q: Consider the relation R(A, B, C, D, E), where it is known that the only keys are KA, C, D} and {D,…

A: Functional Dependency: This is a connection between two attributes, wherein the attribute on the…

Q: , J} and the set of fu sF={{A, B} -> {C}, > {G, H}, {A} -> {I}, he key for R? Decor

A: Normalization is the process of organizing the data in tables in such a way that the anamolies and…

Q: with the following attributes R(A,B,C,D,E). Assume that you were given the following functional…

A: You are given a relation R with the following attributes R(A,B,C,D,E). Assume that you were given…

Q: Consider the relation R with the following functional dependencies: R(P,Q,R, D,E,F) FD = {P →Q, QR →…

A: The set of attributes PEF, QFR is the candidate keys for the given relation R. Therefore, the right…