Give a 3NF decomposition of the given schema based on cover. Give a BCNF decomposition of the given schema using the o of functional dependencies.

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

A: Step 1: Minimal Cover of Functional Dependencies A --> BA --> CB --> EB --> DD --> A…

Q: Give an example of a relation schema R′ and set F′ of functional dependencies such that there are at…

A:

Q: Give an example of a relation schema R′ and set F′ of functional dependencies such that there are at…

A: Answer: The relation R' = (A, B, C, D) the set of functional dependencies F' = A->B, C->D,…

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

A: Given schema is:  R = (A,B,C,D,E,G) whereas set of functional dependencies are: Candidate Key: The…

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

A: Given schema R with the FDs: -

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

A: 3NF Decomposition: Given: Relation R,  Set F of functional dependencies. Find: Decomposition of R…

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

A: Given schema R = (A,B,C,D,E,G) and set of FD's are             F =  AB --> CD…

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

A: Given FDs: -

Q: Show that every schema consisting of exactly two attributes must be in BCNF regardless of the given…

A: BCNF A relation is said to be in BCNF if it holds the following 2 conditions: The relation is in…

Q: Show that it is possible to ensure that a dependency-preserving decomposition into 3NF is a lossless…

A: Let F be a set of functional dependencies which hold on a schema R. Let sigma={R1,R2,...,Rn} be a…

Q: Show that it is possible to ensure that a dependency-preserving decomposition into 3NF is a lossless…

A: Lets see the solution.

Q: Although the BCNF algorithm ensures that the resulting decomposition is lossless, it is possible to…

A: This algorithm apparently helps in identifying additional redundancy, apparently caused by…

Q: Although the BCNF algorithm ensures that the resulting decomposition is lossless, it is possible to…

A: Instead of using BCNF, it is possible to have a lossless decomposition into 3NF itself. For this, it…

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: 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: 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: Show that the following decomposition of the schema R of Exercise 7.1 is not alossless…

A: Given: Show that the following decomposition of the schema R of Exercise 7.1 is not alossless…

Q: Show that the following decomposition of the schema R of Exercise 7.1 is not alossless…

A:

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: 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,H) and the set F of functional dependencies:AB → CDD → CDE…

A: Given:-  schema R = (A, B, C, D, E, G,H) set F of functional dependencies:AB → CDD → CDE → BDEH →…

Q: 4. Decomposition- BCNF. Consider relation R=(ABCDEFG), F={AB>CD, CDE→AB, AG>BD, BDG>EF} (a) Is it in…

A: The candidate key is the set of attributes which is used to uniquely identify tuples in a table.…

Q: Give six important properties of relations.

A: To be determine: Give six important properties of relations.

Q: All parts of this question use the relation R = (ABCDEG) with the set of functional dependencies F…

A: 1) The given relation is : R = (ABCDEG) The given set of functional dependencies F is : A→BC AD→G…

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: 21o of 40 A decomposition is in 3NF if every decomposed relation is in 3NF. A decomposition is in…

A: We have a relation R(A,B,C,D,E,F,G) and functional dependencies. We have decompose R into 4…

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: 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: Give an example of a relation schema R and a set of dependencies such that R is in BCNF but is not…

A: Example: A relational schema R with set of functional dependencies is considered: The relational…

Q: Give an example of a relation schema R and a set of dependencies such that R is in BCNF but is not…

A: Answer: The relation schema R = (A, B, C, D, E) and the set of dependenciesA →→ BCB →→ CDE →→…

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: 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 = (X, Y, Z) on which the following functional dependencies hold: { XY →…

A: Here in this question we have given a relation schema R = (X, Y, Z) on which the following…

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: For this question, short answers (1-2 sentences) are sufficient: A. Explain the difference between a…

A: Below is the answers of both questions. I hope this will be helpful for you..

Q: . Consider the relation R, which has attributes that hold schedules of courses and sections at a…

A: Let us first of all make use the following shorthand notation: C = the CourseNo, SN = the SecNo, OD…

Q: Consider the relation R, which has attributes that hold schedules of courses and sections at a…

A: Actually, the question is about Normalisation:

Q: Explain how the representation of weak entities differs from the representation of strong entities

A: The entity is a representation of an object, or table, or thing in a database management system.…

Q: Given relations P and Q, both over attributes A and B, write a query in relational algebra under bag…

A: Q is always contained in the answer to P.

Q: Question 2. Find a set of FDs for the relation schema R(w, X, y, z) with primary key "wx" under…

A: A set of FDs for the relation schema  R(w, x, y, z) with primary key "wx" under which R is in 2NF…

Q: Question 2. Find a set of FDs for the relation schema R(w, X, y, z) with primary key "wx" under…

A: A set of Fd's for the relation schema R(w,x,y,z) with a primary key "WX" under R is in 2nf but not…

Q: Question 2. Find a set of FDs for the relation schema R(w, x, y, z) with primary key "wx" under…

A: Given relation R(w, x, y, z) "wx" is the primary key Then some of the possible functional…

Q: 8. Consider the following relation instance of the CAR relation schema: CAR Model #cylinders Origin…

A: Actually, database is a used to stores the data.

Q: Q4  Consider a relation R (P, C1, C2, X). P is the primary key while (C1, C2) is another candidate…

A: We are given a relation with primary key P, candidate keys(C1,C2) and non prime attribute X. And we…

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…