jgs CSC 308 Software Engineering 1 Lecture 24: Use Case Diagram Dr. Javier Gonzalez-Sanchez [email protected] www.javiergs.com Building 14 -227 Office Hours: By appointment 

jgs Previously … Use Case Diagram 

jgs Javier Gonzalez-Sanchez | CSC 308 | Winter 2023 | 3 a) Actors b) Use Cases a) Relationships Diagram child father base addition extension base << include >> << extend >> 

jgs Javier Gonzalez-Sanchez | CSC 308 | Winter 2023 | 4 § Show that behavior of the included use case (addition) is inserted into the behavior of the including (base) use case. § A dashed line with an open arrowhead directed from the including use case (base) to the included (addition) use case. The arrow is labeled with the keyword «include». § The include relationship is used to (1) simplify large use case by splitting it into several use cases, (2) extract common parts of the behaviors of two or more use cases. Inclusion base addition 

jgs Javier Gonzalez-Sanchez | CSC 308 | Winter 2023 | 5 § Extending use case defines optional behavior that is not necessarily meaningful by itself. § Extend relationship is shown as a dashed line with an open arrowhead directed from the extending use case to the extended (base) use case. The arrow is labeled with the keyword «extend». Extension base extension 

jgs Javier Gonzalez-Sanchez | CSC 308 | Winter 2023 | 6 Include vs Extends 

jgs Test Yourselves Use Case Diagram 

jgs Javier Gonzalez-Sanchez | CSC 308 | Winter 2023 | 8 Example 

jgs Javier Gonzalez-Sanchez | CSC 308 | Winter 2023 | 9 Example 

jgs Javier Gonzalez-Sanchez | CSC 308 | Winter 2023 | 10 Thoughts? 

jgs Javier Gonzalez-Sanchez | CSC 308 | Winter 2023 | 11 Thoughts? 

jgs Javier Gonzalez-Sanchez | CSC 308 | Winter 2023 | 12 Thoughts? 

jgs Javier Gonzalez-Sanchez | CSC 308 | Winter 2023 | 13 Questions 

jgs Javier Gonzalez-Sanchez | CSC 308 | Winter 2023 | 14 Office Hours Tuesday and Thursday 3 - 5 pm But an appointment required Sent me an email – [email protected] 

jgs 

jgs CSC 308 Software Engineering 1 Lab 24: Use Case Diagram Dr. Javier Gonzalez-Sanchez [email protected] www.javiergs.com Building 14 -227 Office Hours: By appointment 

jgs Javier Gonzalez-Sanchez | CSC 308 | Winter 2023 | 17 Let’s Work Assignment 01 

jgs Javier Gonzalez-Sanchez | CSC 308 | Winter 2023 | 18 Let’s Work Assignment 02 

jgs Javier Gonzalez-Sanchez | CSC 308 | Winter 2023 | 19 Let’s Work Assignment 03 

jgs CSC 308 Software Engineering I Javier Gonzalez-Sanchez, Ph.D. [email protected] Winter 2023 Copyright. These slides can only be used as study material for the class CSC308 at Cal Poly. They cannot be distributed or used for another purpose.