1. Model-View-Controller
A Design Pattern
SE-2030
Dr. Mark L. Hornick

2. Model-View-Controller is one of many different types of Design Patterns
A Design Pattern is
A “standard” arrangement of certain classes that comprise a solution to a given problem
These classes interact in a specific way to implement a specific functionality
The same type of function is typically found in many types of applications
Other Design Patterns are covered in SE-2811 (Software Component Design)
SE-2030
Dr. Mark L. Hornick

3. The Model-View-Controller pattern is an arrangement of three classes
Controller Reacts to user events and responds by invoking actions on the Model
notifies
modifies
Model
The specific representation of data which the application operates upon
View Presents the Model to the user (UI); Notifies Controller of user interactions
displays
SE-2030
Dr. Mark L. Hornick

4. UML Class diagram for a Calculator app
SE-2030
Dr. Mark L. Hornick