EBK DATABASE CONCEPTS
7th Edition
ISBN: 9780133544886
Author: AUER
Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)
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Chapter 4, Problem 4.6RQ
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Business rule:
Business rules define the entities, relationships, and attributes that are used in the
- It includes the process, tactics, aspects, and aesthetics of the business.
- It is the statement used to define or limit some business feature. It is planned to declare the business structure or to organize the behavior of business.
- These rules must be understood by user and database designer.
Example of business rule:
The business rule for the “sales” database used to demonstrate how the product is sold out from the website. The scope of the database is buying things from online websites...
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Modern life has been impacted immensely by computers. Computers have penetrated every aspect of oursociety, either for better or for worse. From supermarket scanners calculating our shopping transactionswhile keeping store inventory; robots that handle highly specialized tasks or even simple human tasks,computers do much more than just computing. But where did all this technology come from and whereis it heading? Does the future look promising or should we worry about computers taking over theworld? Or are they just a necessary evil? Provide three references with your answer.
What are the steps you will follow in order to check the database and fix any problems with it? Have in mind that you SHOULD normalize it as well. Describe in full, consider the following:• Taking the database offline is not allowed since people are connected to it.• Personal data might be bridged and not secured.
Provide three refernces with you answer
You are called by your supervisor to go and check a potential data bridge problem. What are the stepsyou will follow in order to check the database and fix any problems with it? Have in mind that youSHOULD normalize it as well. Describe in full, consider the following:• Taking the database offline is not allowed since people are connected to it.• Personal data might be bridged and not secured.
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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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