Consider the schema R = (A, B, C, D, E, G) and the set F of functional dependencies:AB → CDB → DDE → BDEG → ABAC → DER is not in BCNF for many reasons, one of which arises from the functionaldependency AB → CD. Explain why AB → CD shows that R is not in BCNFand then use the BCNF decomposition algorithm starting with AB → CD togenerate a BCNF decomposition of R. Once that is done, determine whetheryour result is or is not dependency preserving, and explain your reasoning.

Q: 2. Eliminate all ɛ-productions in the following cfg G: G= ({S,A,B}, {a,b,c}, {S→Aa|BBBA, A bS|ɛ,…

A:

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: Consider the schema R = (A, B, C, D, E, G) and the set F of functional depen- dencies: AB → CD ADE…

A: a. To find the candidate keys of R, we need to determine the attribute closure of every subset of…

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, H, I,J} and the set of functional dependencies F = {…

A: f ={     AB → C,      A → D,      B → F,  F → GH,  D → IJ   } To find the key check the RHS of the…

Q: 3. Meaning of FD Consider R= (ABCDE), F = {A>BC, CD→E, B→ D, E → A}. Assume the domains of all…

A: Given,  R = (ABCDE) A→BC CD→E B→D E→A The domain of all attributes are integers

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: Let R(A,B,C,D,E,F,G) be a relation with the FDs: F= (CDG, DG-C, AD-G, G-A, AB-F). Consider the…

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Q: DBMS

A: According to our policy we solve first one only. ============================== About BCNF: the…

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: Find a minimal cover in a standard form for the relation schema R(A, B,C, D, E, F, G, H) with the…

A: A minimal cover or canonical cover means a minimum set of functional dependencies. A canonical cover…

Q: Assume you apply a functional dependence in the BCNF decomposition technique to deconstruct a…

A: Intro Assume you apply a functional dependence in the BCNF decomposition technique to deconstruct a…

Q: Give examples of binary 1:N relationships, other than those in this text, for (a) an…

A: Given question has asked to give examples of binary 1:N relationships;      2. a) an…

Q: PQ → TY ii. P → QR iii. QST → R iv. STR → P   From the above functional dependencies, using…

A: Given:- i. PQ → TY ii. P → QR iii. QST → R iv. STR → P   From the above functional dependencies,…

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 schema R=ABCDEG and the set of functional dependencies F={BC→AG, BG→CD, C→AE, D→AG} 2a)…

A: To address each part of your question:2a) Determine the keys of the schema:To find the keys of the…

Q: 1. If we project the relation R(A,B,C,D,E) with dependencies A→→BC, B→D, and C→→E onto S(A,C,E),…

A: Answer is given below-

Q: Comment say : True / False. whether the decomposition of R ( A, B, C,D , E , G) in (ABCE , BD , AEG…

A: Introduction : Given , Relational Schema R(A,B,C,D,E,G).And its functional dependencies are also…

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 relation with set of functional dependencies R(ABCDEF) ABC->D, ABD->E,…

A:

Q: Question 1: FDs and Keys (a) Consider a relation schema R(A, B, C, D, E), and the set of…

A: Here in this question we have given a relation R. And also given set of functional dependenciesF =…

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

A: a) Candidate Key : Minimal set of attributes used to differentiate every record of the table is…

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: Given a relation schema R = (A, B, C) and its functional dependencies F = {A →B, B→ C). Suppose R is…

A: Answer is given below-

Q: From the given set of functional dependencies,determine that there can be more than one canonical…

A: Functional dependency is a relationship that is shown between two or more attributes of a table.…

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

A: Super key is defined as a set of attributes within a table that can uniquely identify each record…

Q: Suppose a relation schema R = (A, B, C, D) is decomposed into following relations R1(A,B,C) and…

A: A relation schema R is decomposed into R1 and R2

Q: Consider a schema R and a set F of functional dependencies as follows: R= (A,B,C,D,E,G). F = {A →…

A: First of  all , let’s understand what is super key.      Super key : Super key can be defined as  an…

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…