Database Concepts (8th Edition)
8th Edition
ISBN: 9780134601533
Author: David M. Kroenke, David J. Auer, Scott L. Vandenberg, Robert C. Yoder
Publisher: PEARSON
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Chapter 4, Problem 4.4RQ
What is a use case, and what is its purpose?
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What constitutes a use case? How can use cases be described in a variety of ways?
What characteristics define a strong use case? Use cases and their properties have certain commonalities?
What are the hallmarks of an excellent use case? Use cases tend to have a few common characteristics.
Chapter 4 Solutions
Database Concepts (8th Edition)
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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- So, what makes a solid use case, exactly? The use cases have several characteristics.arrow_forwardWhen is the appropriate time to employ generalization, overfitting, and underfitting?arrow_forwardWhat precisely is the difference between generalizing, overfitting, and underfitting, and when is each appropriate to use?arrow_forward
- What does the term "scope" mean?arrow_forwardThe Expert pattern essentially is saying "assign the responsibility to fulfill a request to the object that..." Question options: has the information to fulfill the request. is the expert of the application domain. has direct access to the database. is in control of the use case.arrow_forwardWhat is the definition of the term "scope"?arrow_forward
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