Database Systems: Design, Implementation, & Management
12th Edition
ISBN: 9781305627482
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Chapter 5, Problem 16RQ
Explanation of Solution
Design trap:
- One of the most common design traps is “fan trap” when the user contains one entity in two one-to-many relationship to another entities that time fan trap is occurred.
- Thus producing an association among other entities that is not expressed in the model.
- When the relationship is identified as incorrect or improper model at that time design trap is occurred.
- So, the design trap is represented in a way that is not consistent with the real world.
Example:
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Chapter 5 Solutions
Database Systems: Design, Implementation, & Management
Ch. 5 - Prob. 1RQCh. 5 - What kinds of data would you store in an entity...Ch. 5 - Prob. 3RQCh. 5 - What is a subtype discriminator? Give an example...Ch. 5 - Prob. 5RQCh. 5 - What is the difference between partial...Ch. 5 - Prob. 7RQCh. 5 - According to the data model, is it required that...Ch. 5 - Prob. 9RQCh. 5 - Prob. 10RQ
Ch. 5 - Prob. 11RQCh. 5 - Prob. 12RQCh. 5 - Prob. 13RQCh. 5 - When implementing a 1:1 relationship, where should...Ch. 5 - What is time-variant data, and how would you deal...Ch. 5 - Prob. 16RQCh. 5 - Prob. 1PCh. 5 - Prob. 2PCh. 5 - Prob. 3PCh. 5 - Prob. 4PCh. 5 - Prob. 5PCh. 5 - Prob. 6PCh. 5 - Prob. 7PCh. 5 - Prob. 8CCh. 5 - Prob. 9CCh. 5 - Prob. 10C
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- please explain how the diagrams are madearrow_forwardWhen used in practice, what exactly is a "conformant array," and how does it function?arrow_forwardIn order to complete this task, you must do research on common anti-patterns and categorize them according to the Design, Development, or Architecture phases. every level, add three anti-patterns.arrow_forward
- Design requirements models using use case diagramsarrow_forwardWhen should you employ generalising, overfitting, and underfitting, and what exactly is the difference between these three methods?arrow_forwardWhich parts of these designs suffer from a lack of coherence, and what kind of changes may be made to strengthen the coherence of those parts?arrow_forward
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