EBK DATABASE CONCEPTS
7th Edition
ISBN: 9780133544886
Author: AUER
Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)
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Expert Solution & Answer
Chapter 4, Problem 4.14RQ
Explanation of Solution
Relationship:
An association between several entities is termed as relationship.
- It is used to link the attributes in entities.
- It is represented in a “diamond” box with name of the relationship in Entity-Relationship diagram.
The following diagram demonstrates the “relationship” among entities.
Degree of relationship:
Degree of relationship is a number of entity classes that participate in a relationship. The relationship can be divided into two ways based on the degree of the relationship...
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Chapter 4 Solutions
EBK DATABASE CONCEPTS
Ch. 4 - Prob. 4.1RQCh. 4 - Prob. 4.2RQCh. 4 - Prob. 4.3RQCh. 4 - What is a use case, and what is its purpose?Ch. 4 - Give an example of a data constraint.Ch. 4 - Prob. 4.6RQCh. 4 - Define the term entity, and give an example other...Ch. 4 - Explain the difference between an entity class and...Ch. 4 - Define the term attribute, and give examples for...Ch. 4 - Define the term identifier, and indicate which...
Ch. 4 - Prob. 4.11RQCh. 4 - Prob. 4.12RQCh. 4 - Prob. 4.13RQCh. 4 - Prob. 4.14RQCh. 4 - List and give an example of the three types of...Ch. 4 - Prob. 4.16RQCh. 4 - Prob. 4.17RQCh. 4 - Prob. 4.18RQCh. 4 - Define the term weak entity, and give an example...Ch. 4 - Explain the ambiguity in the definition of the...Ch. 4 - Define the term associative entity, and give an...Ch. 4 - Define the terms supertype, subtype, and...Ch. 4 - What is an exclusive subtype relationship? Give an...Ch. 4 - What is an inclusive subtype relationship? Give an...Ch. 4 - Prob. 4.25RQCh. 4 - Prob. 4.26RQCh. 4 - Prob. 4.27RQCh. 4 - Prob. 4.28RQ
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- Implement the code In MATLAB and send a picture of the Implementation from within the program MATLAB code to detect magnetic materials % Assume we have a reading from a magnetic % sensor magnetic field = 0.8; % Magnetic field strength in Tesla If the material is magnetic (like iron), % there will be a higher reading if magnetic field > 0.5 'material = 'Magnetic (Metal) material = 'Non-Magnetic (Plastic/ else ; 'Wood) end ;disp(['The material is: ', material])arrow_forwardImplement the code in MATLAB and send a picture of the implementation from within the program MATLAB code to calculate material density % and classify based on weight Assume we have the material's weight and % volume weight volume = 5; % Weight in kilograms = 2; % Volume in cubic meters Calculate the density % ; density = weight volume Classify materials based on density % if density 7 ; 'material = 'Metal ; 'material = 'Wood else end ; disp(['The material is: ', material])arrow_forwardpicture of the implementation from within the program > magnetic Field Strength; // Classify material based on magnetic field strength } if (magnetic FieldStrength > 0.3) cout << "The material is Metal" << ; endl } else { cout << "The material is Non-metal" ;<< endl { ; return 0 {arrow_forward
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