Modern Database Management

13th Edition

ISBN: 9780134773650

Author: Hoffer

Publisher: PEARSON

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Enhanced ER Model

The enhanced ER model is an abbreviation for Enhanced Entity-Relationship (EER) model. As you know, the entity-relationship (ER) model is a pictorial illustration of the relationship between various entities of a domain. In the case of a large amount of …

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Textbook Question

Chapter 2, Problem 2.14RQ

Give an example (Other than those described in this chapter) for each of the following, and justify your answer:

derived attribute
multivalued attribute
atomic attribute
composite attribute
composite identifier attribute
optional attribute

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Chapter 2, Problem 2.13RQ

Chapter 2, Problem 2.15RQ

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Chapter 2 Solutions

Modern Database Management

Ch. 2 - Define each of the following terms: entity type...Ch. 2 - Match the following terms and definitions....Ch. 2 - Contrast the following terms: stored attribute;...Ch. 2 - Prob. 2.4RQ Ch. 2 - Prob. 2.5RQ Ch. 2 - Prob. 2.6RQ Ch. 2 - State six general guidelines for naming data...Ch. 2 - Prob. 2.8RQ Ch. 2 - Prob. 2.9RQ Ch. 2 - State three conditions that suggest the designer...

Ch. 2 - List the four types of cardinality constraints,...Ch. 2 - Give an example, Other than those described in...Ch. 2 - What is the degree of a relationship? List the...Ch. 2 - Give an example (Other than those described in...Ch. 2 - Give an example of each of the following, other...Ch. 2 - Give an example of the use of effective (or...Ch. 2 - State a rule that says when to extract an...Ch. 2 - Prob. 2.18RQ Ch. 2 - In addition to explaining what action is being...Ch. 2 - For the Manages relationship in Figure 2-12a,...Ch. 2 - Explain the distinction between entity type and...Ch. 2 - Why is it recommended that every ternary...Ch. 2 - A cellular operator needs a database to keep track...Ch. 2 - Prob. 2.24PAE Ch. 2 - Answer the following questions concerning Figure...Ch. 2 - Prob. 2.26PAE Ch. 2 - You may have been assigned a CASE or a drawing...Ch. 2 - Consider the two E-R diagrams in Figure 2-25 Q,...Ch. 2 - Prob. 2.29PAE Ch. 2 - Are associative entities also weak entities? Why...Ch. 2 - Because Visio does not explicitly show associative...Ch. 2 - Figure 2-26 shows a grade report that is mailed to...Ch. 2 - Prob. 2.33PAE Ch. 2 - The Is Married To relationship in Figure 2-12a...Ch. 2 - Figure 2-27 represents a situation of students who...Ch. 2 - Figure 2-28 shows two diagrams (A and B), both of...Ch. 2 - Prob. 2.37PAE Ch. 2 - Review Figure 2-8LQ and Figure 2-22. Identify any...Ch. 2 - Prob. 2.39PAE Ch. 2 - Prob. 2.40PAE Ch. 2 - Prob. 2.41PAE Ch. 2 - Prob. 2.42PAE Ch. 2 - Prob. 2.43PAE Ch. 2 - Prob. 2.44PAE Ch. 2 - Prob. 2.45PAE Ch. 2 - Prob. 2.46PAE Ch. 2 - Prob. 2.47PAE Ch. 2 - Prob. 2.48PAE Ch. 2 - Draw an ERD for the following situation. (State...Ch. 2 - Prob. 2.50PAE Ch. 2 - Prob. 2.51PAE Ch. 2 - Review your answer to Problem and Exercise 2-49 if...

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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.

Give an example (Other than those described in this chapter) for each of the following, and justify your answer: derived attribute multivalued attribute atomic attribute composite attribute composite identifier attribute optional attribute

Solution Summary: The author explains that Derived attribute and examples are derived from simple attributes, such as age, phone number, and atomic attributes.

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Chapter 2 Solutions