Activity Diagram | Scenario and Case Study Base Project Examples
By: Prof. Dr. Fazal Rehman | Last updated: February 3, 2024
Activity Diagram | Scenario and Case Study Base Project Examples
Activity diagrams are behavioral diagrams.
How many types of UML Diagrams
Activity VS Task
An activity is work that is done with no specific purpose in mind or in some cases, activity can have a mini purpose.
The task is a big term as compared to activity and task is specifically an activity that is done with only having a particular purpose in mind.
What is Activity?
A project is divided into many interdependent activities to complete a task.
The sequence or the order of the activities is very important.
Activity Diagram Symbols
Activity Diagram Case Study 1
Suppose we want to develop a web-based social network with the following functionalities;
The user should signup for the system.
The user should log into the system and can send friend requests or block the user.
Solution:
We need to convert this system into separate components;
Activity 1: Sign upActivity 2: log inActivity 3: Send Friend request
Activity 4: block a user
Explicit requirements VS implicit requirements
Explicit requirements:
Understood
Clearly described by the customers
implicit requirements:
Not Understood
Not Clearly described r by the customers
Explicit requirements
implicit requirements
Sign up
Show form and enter data
log in
Email confirmation
Send Friend request
Show message of success
Accept friend request
Search a user
Block user
View profile
Activity Diagram for module 1 of case study 1
signup activity diagram
Activity Diagram for module 2 of case study 1
scenario-based activity diagram
Activity Diagram for module 1 of case study 2
The user can search books, viewbooks Without any fee but can download the Book only and only if he pays money. Provide the facility of managing the cart To the user, so that he can update his cart.
how many activity diagrams for one project or module
How many activity diagrams for 1 Project?
In most of the cases;
1 activity diagram for each separate module of your project.
The activity of one module can also be drawn in another module if required.
Don’t mix all activities of all modules of your big project in only one diagram.
1 diagram represents the flow of one selected activity from starting to end. Only helping activities can be drawn with the selected activity.
Purpose of Activity Diagram
Draw the activity flow for a system
Describe the sequence from one activity to another
High-level understanding of the system’s functionalities
Modeling business requirements
Investigating business requirements as and when required
