RA Rc RB B R (b) (a) RẠC RAB (RBC B (c) Figure 6.29 Representation of a ternary relationship using binary relationships.

Q: Here's a relation (R), its attributes and its functional dependencies (F): R(A, B, C, D, E, F, G)…

A: Given functional dependencies: BC -> DG CD -> F FG -> A 1. Closure of {ACD}+ is: {ACD}+ =…

Q: the database relation R(a, b, d, e, f) ribute b and d are dependent only on a; e ly on d; and fonly…

A: The functional dependency possible are a -> b, d d -> e, f Here if we take closure of a, that…

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: 3. Disprove the following rule: {B > CD, AB → E, E → C} |= {AE → CD} To disprove a rule, construct a…

A:

Q: n with attributes A1, A2, ..., An. As a function of n, tell how many superkeys R has, if  The only…

A: Introduction A super key is an attribute (or combination of attributes) that is used to identify…

Q: Let R and S be the following relations: R S А В С 3 1 2 13 2 2 3 1 А C D 13 2 1 2 3 2 3 1 3 2 1 Give…

A: 1. It is a Natural Join of the two tables. It joins two tables based on the common columns and shows…

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

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Q: Consider the relation R(O,P,X,Y,E, S); FDs={ O=P, XY=O, OE=S, EY=X, PY=X} What is the dependency…

A: Given Relation R contains attributes O, P, X, Y, E and S. The functional dependencies present in…

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Q: In Section 6.9.4, we represented a ternary relationship (repeated in Figure6.29a) using binary…

A: Given: In Section 6.9.4, we represented a ternary relationship (repeated in Figure6.29a) using…

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: 18. Consider the relation schema CLASS with attributes Student, Subject, and Teacher. The meaning of…

A: Actually, relation schema is defines the structure of data with in a certain domain.

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 the relation R(A, B, C, D, E) and the set F = {AB → CE, E → AB, C → D}. What is the highest…

A: Solution - Given relation is - R(A, B, C, D, E) and the set F = {AB → CE, E → AB, C → D} To identify…

Q: Consider the relation schemas: Computer (c) → Model, Manufacturer, Price, Speed User (u) → Name,…

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

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

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

A: Given:

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: (10) Discrete Structure: Please solve it on urgent basis: Question # 10 :                  For…

A: A = {1,2,3,4}  R = { (2, 2), (2, 3), (2, 4), (3, 2), (3, 3), (3, 4) } The relation R is not…

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: Exercise 19.13 Consider a relation R with five attributes ABCDE. 1. For each of the following…

A: (a) { } (i.e., empty relation): does not violate either dependency. (b) {(a,2,3,4,5), (2,a,3,5,5)}:…

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: 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: Convert the following relation to 2NF, and then to 3NF. Show both conversions. (h, n, c, a, f, k, p,…

A: Solution ::   functional dependencies:   p-->j,m; b-->l; h-->g; n-->p; n-->o;…

Q: Let's suppose, a relation R=(A, B, C, D, E. H) with a set of functional dependencies F: (AE->BC, B…

A: Functional dependency is a DBMS concept . In this attributes of relations  are dependent on each…

Q: Task 4: Consider the relation schema R(A, B, C, D, E) with the following FDs FD1: {A,B,C} → {D,E}…

A: A)  A relation is said to be in BCNF if all it's functional dependency is of form X->Y where X is…

Q: Consider the relation schema R=VWXYZ, with the set of functional dependencies F = {VW->XY, V->X,…

A: Given, The relation schema R=VWXYZ, with the set of functional dependencies F = { VW → XY, V → X, W…

Q: 1. Consider the relational schema part (part_id, name, cost) subpart (part_id, subpart_id, count) A…

A: Introduction

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Q: Suppose RR is a relation with attributes A1,A2,…,AnA1,A2,…,An. How many superkeys will RR have if…

A: Given RR is a relation with attributes A1,A2,…,An  a) The only candidate key is A1 b) The only…

Q: Choose correct answers for each of the following: Consider the relationship R between two entity…

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Q: a) Give an interpretation that is a model of A. You must mapp and q to different relations. b) Show…

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Q: Consider the following scenario: two relationsr and s have histograms on attributes r.A and s.A,…

A: On the attributes r.A and s.A, two relations r and s have histograms, but their ranges are…

Q: Computer Science Given these two relational schemas and sets of functional dependencies: 1)…

A: Answer: I have given answered in the handwritten format in brief explanation

Q: Given: 1. The universal relation schema Q(CTHRSG), where C = course, T = teacher, H = hour, R =…

A:

Q: Consider a relation schema R(A,B,C,D,E,H,G)   F = {A->BC, B->C, C->BED, BD-> E, E->D, AG->E, G->H,…

A: Answer is given below-

Q: Consider the relation schema R=VWXYZ, with the set of functional dependencies F = {VW->XY, V->X,…

A:

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

A: Candidate keys are the set of smallest essential attributes that can generate all the values in the…

Q: 7. The 5-tuples in a 5-ary relation represent these attributes of all people in the Philippines…

A: A composite key is a collection of domains that has a unique value for each n-tuple.

Q: Q. 1 Consider a university database for the scheduling of classrooms for final exams. This database…

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

A:

Q: xercise 8.1.4: Arrow diagrams for relations on small finite sets.   Draw the arrow diagram for…

A: Actually, given question regarding finite sets.

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Q: Question 2 Composite relations can be thought of as composite functions. If S is a relation from set…

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