Which of the following is true about the functional dependency (A, B) → (C, D)?     A and B together determine D.     A is the determinant of C.     C and D together determine A.     A and B together are determined by C and D together.

Q: For each one of the domain specification given below, identify all the functional dependencies, and…

A: Answer(4) EmployeeProject(EmpeNum (PK), ProjNum (PK), HoursWork, DateStartWorkOnProj) The Table is…

Q: Given a set of FDs for the relation schema R(C, A, N, D, Y) with the candidate keys (CN), (DN)). •…

A: Functional Dependency It is a constraint that determines the relation of 1 attribute to some other…

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: (b) functional dependencies F = H → D, B → AI, I → BC, DH → I, ABG → HI. Note that A, B, C, D, E,G,…

A: Here in this question we have given a relation and it is decomposed into two relation R1 and R2.and…

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: Functional dependency forms the basis for Normalization and considered a kind of integrity…

A: The concepts of functional dependency, its types and the various axioms,closure and canonical cover…

Q: Given a relation R(P ,Q ,R ,S, T, U,V,W, X,Y)   and functional dependency set FD =…

A: Given a relation R(P ,Q ,R ,S, T, U,V,W, X,Y)   and functional dependency set FD =…

Q: Which functional dependency violates the 3NF requirements in a relational schema where attributes

A: A functional dependency of type X -> Y where both X and Y are not key of the relation is said to…

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: Given fig3. below and its functional dependencies, FD1, FD2, FD3, r(R) ABCDEFJKM fig3.) FD1 FD2 FD3…

A: Please give positive ratings for my efforts. Thanks.   ANSWER   Here,    We find the candidate key.…

Q: For each one of the domain specification given below, identify all the functional dependencies, and…

A: Answer(2) Employment(StdNum (PK), SubNum (PK), Grade, CreditValue) The Table is present in 1NF as…

Q: (c) of functional dependencies F = AD → BC, CD → EGI, ACG → H. Note that A, B,C, D, E,G, H, and I…

A: iii.  AD->BC, CD->EGI , ACG->H Closure (AD) ={A, D, B, C, E, G, I, H} Here AD is key of R.…

Q: Exercise IV: (a) Given the following relational database schema: R= AB S= BC 2 2 2 21 3 3 Provide…

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

Q: The conclusion of the template is a condition which must be held on tuples hypothesis in the…

A: Template dependencies offer a broader range of data dependencies than earlier dependencies could…

Q: 1. Consider a schema R = (A, B, C, D, E). Assume that the following set F of functional dependencies…

A: The closure of attribute A is a set of those attributes which can be functionally determined by A…

Q: Consider the relation schema R(A, B, C, D, E, F) with the following set of tional dependencies FDs F…

A: We are given a relation schema and it is decomposed into several schemas. We are going to find out…

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: 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 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: Question 5: R = (A,B,C,D,E) %3D F(A->C,C D, B->E) If this a Dependency prese

A: Defined the dependency preservation

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: Q7. Consider a database containing two relations: R(A,B,C) and S(D,E,F). For each of three (your…

A: Answer:-

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

A:

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: For each one of the domain specification given below, identify all the functional dependencies, and…

A: Below I have provided the detailed query of the given question:

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: a ->f ab -> cd C->e de -> b bf -> ae a) Identify the weakest normal form that each of these…

A: A)  Primary key is ab.  The functional dependency a->f is a partial functional dependency. It…

Q: Assume each bank branch can issue loan independently of other branches and assumecustomers may…

A: Option “B” is the correct functional dependency for the given table “Loans”.

Q: Given the following Dentist-patient database schema: Dentist-patient (staffNo, aDate, aTime,…

A: Key for the given relation is (staffNo,aDate,aTime) The functional dependency violating 2NF is…

Q: Question 2 1. Given R (A, B, C, D, E, F) and the following set of functional dependencies: F =…

A: As per our guidelines, we are supposed to answer only 1st three parts. kindly repost the remaining…

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: Identify all the functional dependencies in the following relation with columns A, B, C, and D…

A: a.A→B : doesn't hold. Since values that repeats in A doesn't have same value in B b.A→C : doesn't…

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

A: In given question, we have asked the key for given Relation R and closue of A and closure of AC. Key…

Q: Consider a database containing two relations: R(A,B,C) and S(D,E,F).  For each of three (your…

A: The required diagram is as follows: Explanation Please refer to solution in this…

Q: Assuming functional dependency A-->B holds, which of the following functional dependencies may not…

A: Here, we are going to check which one is not necessarily true for attribute X. Using Armstrong's…

Q: B, C, D, E, G, H}, satisfying the functional dependencies F = {E → G, E → H, G → H, A → BC, BC → D,…

A: As per answering guidelines, solving the first 3 question completely.  A)  E → G, E → H, G → H, A →…

Q: Draw a Dependency Diagram from the following Fully functional dependency:- EmpID, DeptlID→Branch…

A: Dependency diagram or functional dependency is generally represented by rectangles that is consider…

Q: Consider schema(R, F), where R=ABCDE, F={D→EB, E→A, AC→D, BD→E}   Decompose the schema into a set…

A: Each table cell should contain a single value.Each record needs to be unique.In 1NF , a cell…

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

A: In a lossless join decomposition, Relation R is decomposed into two or more relation and must…

Q: transitive dependency.

A: Actually, Transitive dependency is used in database. The answer has given below:

Q: QUESTION 9 A relation R(M, N, O, P, Q) is in 2NF and has the following functional dependencies: • MN…

A: Dear Student, As MN derives O and O derives P and also Q thus MN derives M,N,O,P,Q. Thus MN is a…

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: 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: 151002240 Database Arelation with two attributes A and B satisfies the functional dependency A B…

A: Answer is False

Q: Given two relations R and S, defined on the set A = {1, 2, 3,., 40} where R = { (X,y) | x is…

A:

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

A: Explanation: