Database Systems: Design, Implementation, & Management
11th Edition
ISBN: 9781285196145
Author: Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel
Publisher: Cengage Learning
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Expert Solution & Answer
Chapter 4, Problem 7P
Explanation of Solution
Entity Relational (ER) Diagram:
The following figure illustrates the ER Diagram for given business rules using Crow’s Foot notation:
Explanation:
The above ERD, contains several entities such as “VOLUNTEER”, “ASSIGNMENT”, “LIST”, “ACTION”, “ITEM”, “PACKAGE_CONTENT” and “PACKAGE”. Each entity has its own attributes.
- A volunteer can have assignment for several tasks. Similarly, a task can be done by several volunteers. Hence the relationship between the entities “VOLUNTEER” and “ACTION” is M: N...
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Using the Crow’s Foot notation, create an ERD that can be implemented for a medical clinic, using the following business rules:
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Using the Crow's foot notation,create an ERD that can be implemented for a medical clinic using the following business rules:A patient can make many appointments with one or more doctors in the clinic,and a doctor can accept appointments with many patients.however each oppointment is made with only one doctor and one patient.Emergency patients do not ned an appointment .However,for appointment management purposes,an emergency is entered in the appointment book as"unscheduled."If kept,an appointment yields a visit with the doctor specified in the appointment.The visit yields a diagnosis and ,when appropriate, treatment.With each visit,the patient's records are updated to provide a medical history.Each patient visit creates a bill.Each patient visit is billed by one doctor,and each doctor can bill many patients.Each bill must be paid.However a bill may be paid in many instalments,and a payment may cover more than one bill.A patient may pay the bill directly,or the bill may be the basis…
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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 - Prob. 11RQCh. 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. 9C
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Using the Crow’s Foot methodology, create an ERD that can be implemented for a medical clinic, using at least the following business rules:
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