Database Systems: Design, Implementation, & Management
13th Edition
ISBN: 9781337627900
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Chapter 4, Problem 5RQ
Suppose you are working within the framework of the conceptual model in Figure Q4.5.
FIGURE Q4.5 THE CONCEPTUAL MODEL FOR QUESTION 5
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Create a conceptual model
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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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- Making use of the accompanying guidelines, jot down some notes on how to construct a model in Plaxis.arrow_forwardExplain Entity Relationship Diagram with a suitable example.arrow_forwardwhat can be very interesting about the Entity-Relationship (ER) Modeling that people may forget about ( i am not talking about the main function or explication but just a concept/part that people tend to overlook when they study it for the first time?arrow_forward
- Just what does "weak entity type" mean? Is there a secret to it? Can you explain the meaning of "attribute"?How does sia look like on an ER chart? Please illustrate with a diagram.arrow_forwardDescriptive models possess many critical characteristics and behaviors, which we shall describe in further detail below.arrow_forwardProvide an in-depth comparison of the various requirement modeling techniques, including use cases, data flow diagrams, and entity-relationship diagrams, and explain when each should be applied.arrow_forward
- In a three-page analysis of the subject, the differences between attributes and variables must be clarified.arrow_forwardWould you look if i got ER diagram right ? I am asked to design a conceptual data model using ER /EER diagramming for the business functions of a group of dental offices from the natural language description given below. Be sure to consider the cardinality of, and participation in, each relationship. Also, be sure to identify all key attributes. Document any assumptions you make due to the imprecise nature of the problem specification. "Each office employs one or more dentists, hygienists, and receptionists each of whom have an employee number. Patients are free to use any dental office but, naturally, must make appointments in advance. A record of all such appointments is kept which specifies the patient’s name, the date and time of the appointment and a list of services performed. Adult patients have a SIN (Social Insurance Number) but their children typically do not. Each office provides specific services (e.g. cleaning, filling, X-rays, extraction, etc.) to the patients and bills…arrow_forwardQuestion: What is the anticipated modeling approach and what is the reason to choose it for any model. Note: Please need a short answer in 2/3 sentences.arrow_forward
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Enhanced Entity Relationship Model; Author: Data Science Center;https://www.youtube.com/watch?v=ocQUtXPumdQ;License: Standard YouTube License, CC-BY