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What are the characteristics of a good use case? Discuss some of the defining aspects of use cases.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

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System Model Approaches

The systems model approach is a process-oriented representation that emphasizes the impact or flow of information between modules. The multidisciplinary study of the use of models to design and create systems in business and IT development is known as systems model approach. It models how processes interact and what these processes do, but it does not go into detail about how these processes are implemented. Functional decomposition may be utilized to enhance the models employed in this technique, and they can be coupled to requirements models for additional system partitioning.

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3. During the interview with the client, you learn that they want a feature for pet owners to give reviews on how well a pet-sitter was. Whenever a pet sitter gets a new review, an average review value is calculated. Update the use case diagram to model this new feature. 4. During the interview with the client, you also learn that they want the website to limit the range a pet sitter can set their hourly rate to. The website should only accept a rate between $15/hr and $20/hr inclusive. If the pet sitter enters a number out of that range, the website will not accept it. a. Update the use case diagram to match this new requirement. b. Create a state diagram that models the behavior of how the website system will work when a pet sitter changes their hourly rate.
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