Suppose you are given a relation R-(A,B,C,D,E) with the following functional dependencies: {BC→ADE,D→B}. a. Find all candidate keys. b. Identify the best normal form that R satisfies (1NF , 2NF , 3NF , or BCNF). c. If the relation is not in BCNF, Decompose it until it becomes BCNF, At each step identify a new relation, decompose and re-compute the keys the normal forms they satisfy.

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

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

Q: You are given the following set of functional dependencies for a relation R= (A, B,C,D,E,F), F= (AB…

A: A) The functional dependency are AB->C DC->AE E->F The key for the given relation is set of…

Q: Consider a relation R(A,B,C,D,E) with functional dependencies AB→C, A→D, and D→E. (a) What are…

A: (A ) keys for relation R) is AB   Reason : -- because key is column or set of columns using that you…

Q: A decomposition of a relation R into Rị and R2 is dependency preserving, if - (a) R can be…

A: Answer: The correct option is “(d) All of them”

Q: Answer the following questions about the relation R(a, b, c, d, e, f), with functional dependencies:…

A: Answer : R(a,b,c,d,e,f) a->f ab->cd c->e de->b bf->ae It  not violate any normal…

Q: Consider a relation R(A,B,C,D,E) with functional dependencies AB→C, A→D, and D→E.    What are the…

A: Primary key = AB as we can see in closure that we can find every attribute using AB

Q: bu are given the following set of functional dependencies for a relation R= (A , B C,D,E,F), F=…

A: Key of relation,relation in BCNF and dependency preserving decomposition

Q: You are given a binary relation R (defined below) on A. Each tuple (a, b) indicates that a is…

A: Hey there, I am writing the required solution based on the above given question. Please do find the…

Q: Consider the following relation T: T( A, C, F, G, K, L) Key of relation T is AF Suppose the…

A: We are given a relation T with FDs. We have to check whether relation is in 3NF or not and if not…

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

A: For this problem, we must get all the keys. For this, we must check all the attributes which are…

Q: Consider a relation (p, q, r, s, t, u, v) with functional dependencies as given below: p>q r>s,t…

A: Defined candidate key for the given relational schema

Q: Normalization Here is a set of FDs for a relation R {A, B, C, D, E, F, G}; AB BC>DE AEF>G AC>DE a.…

A: Given, Relation schema = ( A, B, C, D, E, F, G ) The set of functional dependencies are : A -> B…

Q: SIf a decomposition of a relation R into R¡ and R2 is lossless, then which of the followings are…

A: If a decomposition of a relation “R” into “R1”, and “R2” is lossless then it produces “R” by…

Q: Suppose a relation R has attributes A, B and C that satisfies the functional dependency A-B and…

A: 1) 10 records will be retrieved.   2) Option-b is correct It is in 3NF but not in BCNF   3) Option-c…

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

A: A relation Schema of the set of functional dependencies

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: 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->CDE , B->F

Q: Give a set of FDs for the relation R (ABCD) with AB as primary key under which condition R is in 2NF…

A: Solution :  Given schema  R (ABCD) with AB as primary key If R has to be in 2NF, but not in 3NF then…

Q: A decomposition is in 3NF if every decomposed relation is in 3NF. A decomposition is in BCNF if…

A: I have provided solution in step2

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: A decomposition is in 3NF if every decomposed relation is in 3NF. A decomposition is in BCNF if…

A: Answer to the above question is in step2.

Q: Consider the relation scheme R (A, B, C, D, E) and the set of functional dependencies F = { A –→ BC;…

A: Closure (A) =(A, B, C, D, E)  Closure(CD) =(C, D, E, A, B)  Closure (B) =(B, D)  Closure (E) =(E, A,…

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

A: Here, from the given functional dependency we have, {BC}+ = ADEBC {D}+ = BD   Hence here {BC} is the…

Q: Given the following relation: R (A, B, C, D, E, F, G) The functional dependencies that apply onto R…

A: The question is on database normal forms and functional dependencies.

Q: Consider the relation schema R (A, B, C, D, E, F, G, H) with the set of functional dependencies K =…

A: Actually, given relation schema R (A, B, C, D, E, F, G, H)...  functional dependencies K = {A→B,…

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

A: Given a set of functional dependencies on a relational schema and we need to give a BCNF…

Q: In the BCNF decomposition algorithm, suppose you use a functional dependency α → β to decompose a…

A: When the foreign key constraint is not imposed, then the tuple's deletion from the r1 would not have…

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

A: Given FDs: -

Q: Answer with a YES or NO. Given a relation R on set A={1,2,3,4}, such that aRb if and only if a + b.…

A:

Q: 3. Suppose you are given a relation R(PQRSM)and the F, the set of functional dependencies that hold…

A: R(P, Q, R, S, M)  PQ -> R PQ -> S R -> P S->Q (PQ) + ={PQRS} (RS) + ={RSPQ} Therefore…

Q: Q2. Given a relation R( P, Q, R, S, T, U, V, W, X, Y) and Functional Dependency set FD = { PQ → R, P…

A: the answer is with full explaination is given below

Q: Given a relation R( P, Q, R, S, T, U, V, W, X, Y) and Functional Dependency set FD = { PQ → R, P →…

A: Given: a relation R( P, Q, R, S, T, U, V, W, X, Y) and Functional Dependency set FD = { PQ → R, P →…

Q: Consider a relation T with seven attributes ABCDEFG where AB is a composite primary key for T.…

A: The provided answer is

Q: Consider a relation r(A, B, C), with an index on attribute A. Give an example of a query that can be…

A: Example: Consider a relation r(A,B,C) holding an index on attribute “A”. The query plans that only…

Q: 1.) Let R be a relation defined on the set Z by aRb if a < b. What property/properties are violated?…

A: Question 1: The Reflexive Property of a relation states that for every (x,x) belongs to relation R…

Q: 1. Suppose that you have the relation R with n tuples and the relation S with k tuples without…

A:

Q: For relation (R), its attributes and its functional dependencies (F): R(A, B, C, D, E) CD-> B A- D…

A: A relational schema R is considered to be in Boyce–Codd normal form (BCNF) if, for every one of its…

Q: To provide a transitive closure (exhaustive) query of prerequisites, we need to use a query that is…

A: Informally, the transitive closure gives the set of all places we can get to from any starting…

Q: Compute the closure of the following set F of functional dependencies for relation schema R = (A, B,…

A: The Functional  Schema R= (A,B,C,D,E) Given functional dependencies : A  →  BC CD → E B → D E  → A…

Q: When the foreign key refers to a tuple which does not exists in subjected relation then the…

A: Referential integrity constraint - If a foreign key exists in a relation, then the foreign key value…

Q: Question 10. Consider the relation R (ABCDE) and functional dependencies set {A - B, B - C, C D, D…

A: The highest normal form of R

Q: Question 2. Let there be relation R(A, B, C, D, E) with FD set: {A → BC, C possible? D, D → A}. How…

A: total number of super key is :: 8   solution provided in step2

Q: Suppose we have three relations r(A, B), s(B, C), and t(B, D), with all attributesdeclared as not…

A: While creating a database, if there is some column where it is mandatory to feed in data that is we…

Q: Consider the depicted state for relation R in the table below: C y 2. Which of the following…

A: Correct regarding functional dependencies in given relation R

Q: ;; "relate" accepts a positive integer x and relation R and returns { y | (x y) €R }. ;; Type…

A: Helper Function : An helper function is a capacity that performs part of the calculation of another…

Q: QUESTION 19 Eiven relation R(A, B, C, D, E, F, G, H, I, J) and the following set of function…

A: Given,  AB -&gt; C A -&gt; DE F - &gt; GH D -&gt; IJ A+ (Closure) = ADEIJ Explanation: A -&gt; A…

Q: A known relationship mode of R (U, F), U= (c, t, h, r, s, g, q); F={c->tq, cs->g, ht->r, hr->c,…

A: The given part from the question that is the relation R(U, F) which is defined as follows:- U = {c,…

Q: Let R(ABCDEFG) be a relation and F={A -> C, A-> D, B->F, E->F, F->G} a. Show example of lossless…

A: According to the information given:- We have R(ABCDEFG) F={A -&gt; C, A-&gt; D, B-&gt;F, E-&gt;F,…

Q: Let R(ABCDEFG) be a relation and F={A -> C, A-> D, B->F, E->F, F->G} a. Show example of lossless…

A: According to the information given:- We have R(ABCDEFG) F={A -&gt; C, A-&gt; D, B-&gt;F, E-&gt;F,…