DATABASE SYSTEMS-MINDTAPV2.0
13th Edition
ISBN: 9780357427873
Author: Coronel
Publisher: CENGAGE L
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Expert Solution & Answer
Chapter 2, Problem 2P
Explanation of Solution
Crow’s Foot notation:
In the Crow’s Foot model by the three-pronged crow’s foot to exhibit the “many” side relationship.
- In this notation, “1”is represented as a short line segment.
- “M” is represented as three-pronged crow’s foot.
- The relationship name is represented above the relationship line.
Crow’s Foot ERD (Entity Relationship Diagram):
- The business rule in the problem 1 in the textbook describes about the relationship between AGENT and CUSTOMER and it is written as follows.
- One agent can have many customers, but each customer has only one agent...
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9. Write the business rules that are reflected in the ERD shown in Figure P2.17.
FIGURE P2.17 THE CROW'S FOOT ERD FOR PROBLEM 17
THEATER
MOVIE
shows
recoves
REVIEWER
REVIEW
writes
For each problem that can be decomposed into a set of phases, what is the name of the approach used to resolving the issue?
Assignment: Problem #7 from Chapter 4 of the textbook. The case study is United Helpers.
With the use of Microsoft Visio, draw YOUR entity relationship diagram (ERD) using Crow's foot notation to indicate entities, relationships, optionalities, connectivities and cardinalities.
In addition, be sure to include a heading on your ERD with a brief descriptive title, your name, and a date.
It is suggest that you write out business rules but the rules do not need to be submitted.
7. How would you (graphically) identify each of the following ERM components in a Crow’s Foot notation?
an entity
the cardinality (0,N)
a weak relationship
a strong relationship
Chapter 2 Solutions
DATABASE SYSTEMS-MINDTAPV2.0
Ch. 2 - Prob. 1RQCh. 2 - What is a business rule, and what is its purpose...Ch. 2 - How do you translate business rules into data...Ch. 2 - Prob. 4RQCh. 2 - Explain how the entity relationship (ER) model...Ch. 2 - Prob. 6RQCh. 2 - Prob. 7RQCh. 2 - Prob. 8RQCh. 2 - Prob. 9RQCh. 2 - Prob. 10RQ
Ch. 2 - What is a relationship, and what three types of...Ch. 2 - Give an example of each of the three types of...Ch. 2 - What is a table, and what role does it play in the...Ch. 2 - Prob. 14RQCh. 2 - Prob. 15RQCh. 2 - Prob. 16RQCh. 2 - Prob. 17RQCh. 2 - Prob. 18RQCh. 2 - Prob. 19RQCh. 2 - Prob. 21RQCh. 2 - Prob. 22RQCh. 2 - Prob. 1PCh. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - Using Figure P2.6 as your guide, work Problems 68....Ch. 2 - Prob. 7PCh. 2 - Prob. 8PCh. 2 - Typically, a hospital patient receives medications...Ch. 2 - Prob. 10PCh. 2 - Prob. 11PCh. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - Prob. 14PCh. 2 - Prob. 15PCh. 2 - Prob. 16PCh. 2 - Prob. 17P
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