Question 2 1. Given R (A, B, C, D, E, F) and the following set of functional dependencies: F = {A>EDC, B→D, E→CF, ED→A, EB→C} а. Show that AB is a primary key of R. b. Explain why R is not in the 2NF? c. Give a decomposition of R that is in 2NF.

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: Given R ={A, B, C, D}, and the set of Functional dependencies A→BC, B→D. (a) Is the decomposition…

A: The Functional dependency we have are A->B A->C B->D A->D A)  If we decompose the…

Q: Question: Consider the relation: R(A, B, C, D, E, F, G, H, I, J, K, L,M,N,O,P,Q), {A, B} is the…

A: R(A, B, C, D, E, F, G, H, I, J, K, L,M,N,O,P,Q) Candidate key: {A, B}, {C,D,E}Prime attributes Non…

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

A: Explanation: Find the closure set of all the options given. If any closure covers all the attributes…

Q: Problem 1 Convert the following relation to 2NF, and then to 3NF. Show both conversions. (h, n, c,…

A: In this question, first, we find the 2NF. In 2NF, for relations where the primary key contains…

Q: Consider R(A,B,C,D) and Functional dependencies A -> B, B -> C, C-> D, D -> B. Following…

A: Given:

Q: Given R ={A, B, C}, and the set of Functional dependencies   A→B, B→C. (a) Is the decomposition of…

A: Explanation:

Q: Problem 1 Convert the following relation to 2NF, and then to 3NF. Show both conversions. (h, n, c,…

A: 2NF: A relation is in 2NF if it is already in 1NF and all functional dependencies should be full…

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: 2.For each of the following relations with given functional dependencies, @Calculate canonical cover…

A: NOTE: According to the rules, only question (a) is to be answered (i) Fc is called a canonical cover…

Q: Consider the schema R = (A, B, C, D, E, G) and the set F of functional dependencies:A → BCBD → ECD →…

A: According to question, There is a relation R = (A, B, C, D, E, G) with F of functional dependencies:…

Q: Consider the schema R = (A, B, C, D, E, G) and the set F of functional dependencies:A → BCBD → ECD →…

A: The functional dependency CD → AB can also be written as follows: CD → A CD → B Now, CD+ = {C D A B…

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

A: ABC->D, ABD->E, CD->F, CDF->B, BF->D A)  Closure(ABC) ={A, B, C, D, E, F} Therefore…

Q: Consider a relation schema R = {A, B, C, D, E, F, G} with the following set of %3D functional…

A: In this question, we have a relation schema R along with its functional dependencies F. Also given 4…

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 a relation X with six attributes WYSMFE where WS is a composite primary key for X. Assume X…

A: As per our guidelines we are supposed to answer only question. Kindly repost other question as…

Q: Consider a relation X with six attributes WYSMFE where WS is a composite primary key for X. Assume X…

A: As per our guidelines we are supposed to answer only one question. Kindly repost other as a separate…

Q: Consider a relation X with six attributes WYSMFE where WS is a composite primary key for X. Assume X…

A:

Q: Consider a relation X with six attributes WYSMFE where WS is a composite primary key for X. Assume X…

A:

Q: Question 6. Consider the relation R(ABCDE) and its functional dependencies set {AB->C, C->E, B-> D,…

A: Answer of the given question: choice (d) is the correct answer.  Lossless Decomposition:  Lossless…

Q: Question 6. Consider the relation R(ABCDE) and its functional dependencies set {AB->C, C->E, B-> D,…

A: Answer of the given question: choice (d) is the correct answer.  Lossless Decomposition:  Lossless…

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

A: Given: Relation R with the following functional dependencies: R(P,Q, R, D, E, F) FD = {P > Q,QR →…

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

A: The relation schema R is in a (BCNF) with respect to a set F of FDs if, and only if, for each FD X→Y…

Q: Consider a schema R = {A,B,C,D,E}and the following set of functional dependencies: {AD->B,…

A: If there is any relation R and we have to check whether the relation is in Boyce–Codd Normal Form…

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

A:

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

A:

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: ideas 9. Suppose relation R(A,B,CD) has the following functional dependencies 1-B, B- C, BC A, A D,…

A: The answer is

Q: Given a relational schema, R(A, B, C), and set of functional dependencies over R, F = {A → B, AB →…

A: a)A is not the super key, hence it does not represents the relation uniquely The super key will be…

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 the relation schemas R(A,B) and S(A,B). Suppose {A } is the key for R and also the key for…

A: Even though {A} is the key for both R and S, the union of R and S has the complete keyset, so here…

Q: Consider the unnormalized relation R with six attributes ABCDEF and the following functional…

A: Objective: A relation R is given with 6 attributes ABCDEF along with functional dependencies as: AB…

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: in a database system the functional dependency preservation within relations is critically…

A: If in a database system the functional dependency preservation within relations is critically…

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

A: The original relation is r(A,B,C,D,E,F). This relation is not BCNF due to the first functional…

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

A: Given: R = {M, N, P, Q, S} F = {N → Q, S → M, M →P, P → S}   Rule to find Super Key in a relation…

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

A: The given relation is lossless-join decomposition and not dependency preserving. Hence, correct…

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: 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: Consider the schema R = (A, B, C, D, E, G, H) and the set F of functional dependencies:AB → CDD →…

A: 3NF decomposition: Any relation is said to be in 3NF if it follows following characteristics: The…

Q: Consider a relation X with six attributes WYSMFE where WS is a composite primary key for X. Assume X…

A: The provided answer is

Q: 1. Consider the following relation that involves student data: GRADE (ClassName, Section, Term,…

A:

Q: (6) What are the 2 properties we need to keep in mind while doing decompositions to achieve a…

A: 2 properties are : ✓Lossless Decomposition: If the information is not lost from the relation that is…

Q: Consider the relational schemapart(part_id, name, cost)subpart(part_id, subpart_id, count)where the…

A: Recursive SQL query: The below query is a recursive query used to output all the subparts of part…

Q: Consider the Musician database ER diagram as shown in Figure Give the FDs for the constraints in the…

A: The Answer is

Q: PLEASE TYPE IF POSSIBLE OR WRTIE ELIGIBLY  Consider a relation X with six attributes WYSMFE where…

A: Given: PLEASE TYPE IF POSSIBLE OR WRTIE ELIGIBLY  Consider a relation X with six attributes WYSMFE…

Q: b) Given the relation R(W,X,Y,Z). We have the following functional dependencies: XY W, Y-Z, YW→X,…

A: The answer is handwritten as it include some table data .the answer is given below

Q: |A--→ BC, C---→D for relation R? es, why? If no, please nd Dependence Prese

A: For finding the key of relation R, Step 1 - Search the attributes which are not in right hand side…