Consider the universal relation: R = (A, B, C, D, E, F, G, H, I, J) and the set of functional dependencies:  A, B -> C  B, D -> E, F  A, D -> G, H  A -> I  H -> J What is the key for R? And Decompose R into 2NF, and then into 3NF relations.

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…

A:

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: Suppose you have a Relation that has an atomic Primary Key and noRepeating Groups. All non-key…

A: According to the details provided about the relation, the relation is in 2NF. This relation has to…

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: Given the relation R(C, D, E, F) and functional dependency: C-> DF Which of the following functional…

A: Answer to the above question is in step2.

Q: Given the relation R(A, B, C, D, E, F), the following functional dependencies exist: B --> C, D D…

A: Given : R(A, B, C, D, E, F) B --> C, DD --> F

Q: onsider a relation T with seven attributes ABCDEFG where AB is a composite primary key or T. Assume…

A: A)  Primary key for the given relation is AB The FD A ->CEF is a partial functional dependency…

Q: Consider a relation schema R = {A, B, C, D, E} and its functional dependency set F = {A → B,CD → E,B…

A:

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…

A: Candidate keys is {F} Here for X->Y, the relation will be in 3nf if X is a super key or Y is one…

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: Q2: Given relation R with attributes (A, B, C, D, E, F). Give all the keys of R if the functional…

A: Given relation R(A, B, C, D, E, F)   Functional Dependencies: AB → C,  CD → E,  E → F   A, B, D do…