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c) Provide an example of a ternary relationship that loses semantics if represented as three binary relationships. (Use Figures 3.18 and 3.19 below as an example). Do not use the same ER model as in the textbook. SUPPLY Supplier Product Project Pencil Pen Peters Project 1 Peters Project 2 Figure 3.18 Ternary versus binary relationship types: example instances. Johnson Pen Project 1 SUPPLIES USES CAN SUPPLY Product Project Project 1 Project 1 Project 2 Supplier Peters Supplier Project Product Project 1 Pencil Penci Pen Peters Peters Project 2 Pen Peters Johnson Project 1 Pen Johnson Pen OFFERS INSTRUCTOR 1N ON SEMESTER 0.N Figure 3.19 Ternary relationship type in the ER model. INR O.N SEM YEAR O.N COURSE QUALIFIED CNB

c) Provide an example of a ternary relationship that loses semantics if represented as three binary relationships. (Use Figures 3.18 and 3.19 below as an example). Do not use the same ER model as in the textbook. SUPPLY Supplier Product Project Pencil Pen Peters Project 1 Peters Project 2 Figure 3.18 Ternary versus binary relationship types: example instances. Johnson Pen Project 1 SUPPLIES USES CAN SUPPLY Product Project Project 1 Project 1 Project 2 Supplier Peters Supplier Project Product Project 1 Pencil Penci Pen Peters Peters Project 2 Pen Peters Johnson Project 1 Pen Johnson Pen OFFERS INSTRUCTOR 1N ON SEMESTER 0.N Figure 3.19 Ternary relationship type in the ER model. INR O.N SEM YEAR O.N COURSE QUALIFIED CNB

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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c) Provide an example of a ternary relationship that loses semantics if represented as three binary relationships. (Use Figures 3.18 and 3.19 below as an example). Do not use the same ER model as in the textbook. SUPPLY Supplier Product Project Pencil Pen Project 1 Project 2 Project 1 Peters Peters Figure 3.18 Ternary versus binary relationship types: example instances. Johnson Pen SUPPLIES USES CAN SUPPLY Product Project Supplier Project Project 1 Project 2 Supplier Product Peters Pencil Peters Pen Johnson Peters Pencil Project 1 Peters Johnson Pen Project 1 Project 1 Pen Project 2 Pen OFFERS INSTRUCTOR LN ON SEMESTER 0.N Figure 3.19 Ternary relationship type in the ER model. INR O.N SEM YEAR O.N COURSE QUALIFIED CNR
Transcribed Image Text:c) Provide an example of a ternary relationship that loses semantics if represented as three binary relationships. (Use Figures 3.18 and 3.19 below as an example). Do not use the same ER model as in the textbook. SUPPLY Supplier Product Project Pencil Pen Project 1 Project 2 Project 1 Peters Peters Figure 3.18 Ternary versus binary relationship types: example instances. Johnson Pen SUPPLIES USES CAN SUPPLY Product Project Supplier Project Project 1 Project 2 Supplier Product Peters Pencil Peters Pen Johnson Peters Pencil Project 1 Peters Johnson Pen Project 1 Project 1 Pen Project 2 Pen OFFERS INSTRUCTOR LN ON SEMESTER 0.N Figure 3.19 Ternary relationship type in the ER model. INR O.N SEM YEAR O.N COURSE QUALIFIED CNR
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