Object-Oriented Design - Class Diagram of Music Practice App

Running head: OBJECT-ORIENTED DESIGN
Object-Oriented Design
Name of the Student
Name of the University
Author’s note:

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Class Diagram:
Figure 1: Class Diagram of Music Practice App
(Source: Created by Author)

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Sequence Diagram:
Figure 2: Sequence Diagram
(Source: Created by Author)
This sequence diagram has one actor and five other objects. The use controller is used to
login and register user. Logged in user can see all available music through index method in
MusicController. Model View Controller approach is special because user does not access
requested page directly. Rather user sends a request to controller through URL and controller
decides what to do. The User will call index method and controller will fetch all details from
database using music model. Models in MVC approach has a great significance. Models does not
represent the database but is the gateway to the database. So each time controller needs to fetch
data from database, the website will call models to do that. ProgressUpdate does not lead to any
other view. This is used by combination of server and front end side scripting. Client side

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scripting keep track of progress and when user wants to store data, the client side script sends
XMLHTTP request to backend with progress and auto generated score data.

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Bibliography:
Almadi, S.H., Ali, N.M. and Admodisastro, N., 2018. ID NO. UPM 019 TOPIC: Class Diagram
Recommender System (CDRS): An Educational Tool for UML Class Diagram. UNIVERSITY
CARNIVAL on e-LEARNING (IUCEL) 2018, p.434.
Muñoz, P., Burgueño, L., Vallecillo-Moreno, A.J. and Gogolla, M., 2019. Automatic Generation
of Valid Behavioral Scripts from UML Sequence Diagrams.