Database Systems: Design, Implementation, & Management
13th Edition
ISBN: 9781337627900
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Textbook Question
Chapter 4, Problem 12RQ
Discuss two ways in which the 1:M relationship between COURSE and CLASS can be implemented. (Hint: Think about relationship strength.)
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Discuss the differences between a weak relationship and a strong relationship.
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Chapter 4 Solutions
Database Systems: Design, Implementation, & Management
Ch. 4 - Prob. 1RQCh. 4 - What is a strong (or identifying) relationship,...Ch. 4 - Prob. 4RQCh. 4 - Suppose you are working within the framework of...Ch. 4 - Prob. 6RQCh. 4 - Prob. 7RQCh. 4 - Discuss the difference between a composite key and...Ch. 4 - What two courses of action are available to a...Ch. 4 - What is a derived attribute? Give an example. What...Ch. 4 - Prob. 11RQ
Ch. 4 - Discuss two ways in which the 1:M relationship...Ch. 4 - Prob. 13RQCh. 4 - Prob. 14RQCh. 4 - Briefly, but precisely, explain the difference...Ch. 4 - What are multivalued attributes, and how can they...Ch. 4 - Prob. 17RQCh. 4 - Prob. 18RQCh. 4 - What two attributes must be contained in the...Ch. 4 - Describe precisely the composition of the...Ch. 4 - Prob. 21RQCh. 4 - Prob. 1PCh. 4 - Create a complete ERD in Crows Foot notation that...Ch. 4 - Prob. 4PCh. 4 - Prob. 5PCh. 4 - Prob. 6PCh. 4 - Prob. 7PCh. 4 - Prob. 8PCh. 4 - Prob. 9PCh. 4 - Prob. 10PCh. 4 - Prob. 11C
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- How strong is a relationship? Give an illustration of each of the relationship degrees shown in this section.arrow_forwardGive an explanation of what the Entity-Relationship model is as well as how it works?arrow_forwardWhat is the strength of a relationship? Give an example of each of the degree of association given in this section.arrow_forward
- Write down the many kinds of attributes in the Entity-Relationship (ER) model.arrow_forwardWhat exactly does it mean to be a "weak entity type"? Do you know the trick? What exactly does the word "attribute" mean?What does an ER chart look like for sia? If possible, a schematic would be helpful.arrow_forwardHow are entity-relationship diagrams used? What kind of symbol is utilized to represent a relationship? What does the term "associative entity" mean? Give an example.arrow_forward
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