Database Concepts (8th Edition)
8th Edition
ISBN: 9780134601533
Author: David M. Kroenke, David J. Auer, Scott L. Vandenberg, Robert C. Yoder
Publisher: PEARSON
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Textbook Question
Chapter 4, Problem 4.15RQ
List and give an example of the three types of binary relationships other than the ones used in this book. Draw both a traditional E-R diagram and an IE Crow’s Foot E-R diagram for each.
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Please provide a list and illustrative example for the three forms of binary relationships
that are not covered in this book. Draw a regular E-R diagram as well as an IE Crow's
Foot E-R diagram for each of the three cases studied here.
Describe how the relationship (M:N) of an E-R diagram is transformed into relations
What is the purpose of entity-relationship diagrams? What sort of symbol is used to depict a connection, and how does it work? What exactly does the phrase "associative entity" imply and what does it mean? Give an example.
Chapter 4 Solutions
Database Concepts (8th Edition)
Ch. 4 - Prob. 4.1RQCh. 4 - Prob. 4.2RQCh. 4 - Prob. 4.3RQCh. 4 - What is a use case, and what is its purpose?Ch. 4 - Give an example of a data constraint.Ch. 4 - Prob. 4.6RQCh. 4 - Define the term entity, and give an example other...Ch. 4 - Explain the difference between an entity class and...Ch. 4 - Define the term attribute, and give examples for...Ch. 4 - Define the term identifier, and indicate which...
Ch. 4 - Prob. 4.11RQCh. 4 - Prob. 4.12RQCh. 4 - Prob. 4.13RQCh. 4 - Prob. 4.14RQCh. 4 - List and give an example of the three types of...Ch. 4 - Prob. 4.16RQCh. 4 - Prob. 4.17RQCh. 4 - Prob. 4.18RQCh. 4 - Define the term weak entity, and give an example...Ch. 4 - Explain the ambiguity in the definition of the...Ch. 4 - Define the term associative entity, and give an...Ch. 4 - Define the terms supertype, subtype, and...Ch. 4 - What is an exclusive subtype relationship? Give an...Ch. 4 - What is an inclusive subtype relationship? Give an...Ch. 4 - Prob. 4.25RQCh. 4 - Prob. 4.26RQCh. 4 - Prob. 4.27RQCh. 4 - Prob. 4.28RQ
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- Suppose you are working within the framework of the conceptual model in Figure Q4.5. FIGURE Q4.5 THE CONCEPTUAL MODEL FOR QUESTION 5arrow_forwardData modelling is most often accomplished through the use of a(an) ________________. a. entity-relationship diagram b. data-flow diagram c. functional decomposition diagram d. activity diagramarrow_forwardDescribe how the relationship (1:M) of an E-R diagram is transformed into relationsarrow_forward
- Consider the following ER diagram given to you what are the possible relations you will be creating inRelational model.arrow_forwardAnalyze the given entity relationship diagram and answer the following questions. What is the degree of “has” relationship?arrow_forwardList and give an example of the three types of binary relationships other than the ones used in this book. Draw both a traditional E-R diagram and an IE Crow’s Foot E-R diagram for each.arrow_forward
- How do you map a "One to Many" relationship when mapping ER Diagram to Schema Select one: O a. Take the primary key of entity in the "Many" side and put it as a foreign key in the table representing entity in the "One" side O b. Take the primary key of entities the "One" and "Many" sides and put them as foreign keys in a separate table O c. Take the primary key of entity in the "Many" side and put it as a foreign key in the table representing entity in the "full" side O d. Take the primary key of entity in the "One" side and put it as a foreign key in the table representing entity in the "Many" sidearrow_forwardDescribe how the relationship (supertype/subtype) of an E-R diagram is transformed into relationsarrow_forwardFor the entity-relationship model expressed in the IE diagram below, what is the minimum number of tables required to implement it in BCNF. (Image attached). Enter the number below.arrow_forward
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