Can we have identifying relation between two strong entities in this digram in the attached picture. ?

Q: Give some instances of relationships that may have more than one candidate key to consider.

A: Answer for the given question -   Candidate key: A candidate key is recognized as a "set of…

Q: Our discussion of lossless decomposition implicitly assumed that attributes on the left-hand side of…

A:

Q: Give an example of an expression defining a materialized view and two situations (sets of statistics…

A: View maintenance: View maintenance is defined as the task to keep a materialized view up-to-date…

Q: Can relationship exist if cardinality is reduced to zero. Provide reason and Explain with the help…

A: Relationship: For internal process reasons, a “quantity outstanding” price is related to every…

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: Our discussion of lossless decomposition implicitly assumed that attributes onthe left-hand side of…

A: Answer: The Cartesian product and the selection operator are used to describe the natural join…

Q: Consider two entity sets A and B that both have the attribute X (among otherswhose names are not…

A: ER diagram or ER model also called as ER Schema. ER model is based on two main concept- Entity –…

Q: however, do we have such a lackluster collection of entity sets

A: Entity set : An entity set is basically a collection of group of different entities.  Strong entity…

Q: Explain aproximiation and how it can be achieved by fuzzy relation with simple example

A: Answer: A connection is a mathematical representation of a situation in which certain elements of a…

Q: Write the relation matrix for the Boolean nor. What is the identity for nor?

A: Given, Relation matrix fot the boolean nor, also find the identify for nor.

Q: Write the relation matrix for the Boolean nor. What is the identity for nor?

A: A logical matrix, binary matrix, relation matrix, Boolean network, or (0,1) matrix is a matrix with…

Q: With a simple example, explain aproximiation and how it may be accomplished using a fuzzy relation

A: Fuzzy relation:

Q: Suppose two relationsr and s have histograms on attributes r.A and s.A, respectively, but with…

A: Find the largest unit u that evenly divides the range size of both histograms. Divide each histogram…

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: Q1Greetings, thatnk you in advance for your response.    - Give a decomposition into 3NF of the…

A: The Relation R( A,B,C,D,E ) can be decomposed as follows to 3nf: Functional dependencies, F : [ AB…

Q: What does it mean for a logical connective to be truth-functional? Give an example of a non-truth…

A: A truth table is a capacity that acknowledges truth esteems as info and produces a novel truth…

Q: Create a venn diagram between public, private, and hybrid clou

A: How Hybrid Cloud Works   A hybrid combines the resources of two different clouds or a mix of both.…

Q: Is it true that associated entities are also weak? Why do you think that is? Is there anything…

A: Introduction: An associative entity connects the instances of one or more entity kinds. There are…

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: 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: Relation R has eight attributes ABCDEFGH. Fields of R contain only atomic values. F = {CH -> G, A ->…

A: Here we can see that D is not part of any FD's , hence D must be part of the candidate key.

Q: Define Validity from both type perspective and unitary concept?

A: The definition of validity changes based on the situations and it is defined in many areas like…

Q: Define Validity from both type perspective and unitary concept?

A: Validity refers how accurately a method measures what has to be measured in a quantitative study.…

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: 5. Write the relation matrix for the Boolean nor. What is the identity for nor?

A: The detailed explanation is provided below

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: Provide an example of a ternary relationship that loses semantics if represented as three binary…

A: In the Ternary relationship, there are three kinds of element partners. In this way, we can say that…

Q: the following proposition, describe (i) a model on which it is true, and (ii) a model on which it is…

A: Given For the following proposition, describe (i) a model on which it is true, and (ii) a model on…

Q: Write a C program that would: - Let the users accept a relation. - Input options should be in…

A: The C language is a computer programming language which was developed to do system programming for…

Q: . If a denormalization situation exists with a one-to-one binary relationship, which of the…

A: if a denormalization situation exists with a one-to-one binary relationship

Q: Use the definition of functional dependency to argue that each of Armstrong’s axioms (reflexivity,…

A: To show the Armstrong’s reflexivity axiom is found:   A function dependency A→B which holds true…

Q: Identify the set of functional dependencies in the relation instance CAR shown next. Does this…

A: Actually, relation schema is a primary element of relation database.

Q: Explain the difference between a weak and a strong entity set.

A: Strong Entity Always has a primary key. Not dependent on any other entity. Represented…

Q: Explain the difference between a weak and a strong entity set.

A: Strong Entity:A strong entity is not dependent on any other entity  . A strong entity will usually…

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: Discuss the classification of traceability relations elicit

A: Requirement traceability refers to the capability of a requirements management process or tool which…

Q: Question 3. Suppose we have a relation R = (A, B,C, D, E , F) with a set of function ependencies F =…

A: A -> DE AC -> B B -> D Closure (AC) =(A, C, B, D, E)  Since AC determines all the attribute…

Q: Consider the following lattice structure of generalization and specialization (attributes not…

A: Given: Consider the following lattice structure of generalization and specialization (attributes…

Q: It is possible to can convert any weak entity set to a strong entity set by simply adding…

A: To avoid the inconsistencies caused by duplicating the key of the strong entity. Though a weak…

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

A: GIVEN: The set F of functional dependencies on the relation schema r(A, B, C, D, E, F): A → BCD…

Q: Using the functional dependencies of Exercise 7.6, compute the canonicalcover Fc.

A: Using the functional dependencies of Exercise 7.6, compute the canonicalcover Fc. Hence I have found…

Q: Translate the following requirement to a domain model: A figure may be y, or it may be composed by…

A: The given problem is related to creating the domain model diagram where the requirment statement is…

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: Let FD ={G → A, A → BC, C → FG, E → HG} be a set of functional dependencies. Calculate the…

A:

Q: Given 5 dimensional parameters A, B, C, D, E, F and the following set S of functional dependencies S…

A: The set of functional dependencies are given as follows-  S={B→A;C→B;F→E;B→F;F→D};   Let us find the…

Q: Define the term Determinant?

A: In mathematics, the determinant is a scalar value that is a function of the entries of a square…

Q: A weak entity set may always be made stronger by adding the primary-key attributes of its…

A: Introduction: A weak entity set will always be better off if its main features are added to its…

Q: Is there a need for creating an associative entity? If so, draw one, if not, then suggest

A: An associative entity could be a term utilized in social and entity–relationship hypothesis. A…

Q: Change the Class Diagram to have (Generalization, Aggregation, Composition, Association and…

A: The Class Diagram to have (Generalization, Aggregation, Composition, Association and…

Q: Should the cardinality between entities be translated/read from both ends of the notation when…

A: Cardinality: Cardinality refers to the maximum or lowest number of components that may be used on…