itsourcecode.com hosts 40+ free Use Case diagram examples for BSIT capstone projects (2026): complete UML use case diagrams with actors, use cases, system boundaries, and include/extend relationships for the most common capstone domains. Capstone-ready for Chapter 3 documentation. Browse by system below.
What is a Use Case Diagram?
A Use Case Diagram is a behavioral UML diagram that captures what your system DOES from the user’s perspective. It shows: Actors (stick figures, users, admins, external systems), Use Cases (ellipses, actions the system performs: Login, Add Book, Process Payment), System Boundary (rectangle around use cases, defines scope), and Relationships (association lines plus <> / <> for shared or optional behaviors). Use Case diagrams are mandatory in Chapter 3 of BSIT capstones.
How to draw a Use Case Diagram (5 steps)
List the actors: every user role that interacts with the system. Common ones: Admin, User/Customer, Manager, Guest. Outside systems count too (Payment Gateway, SMS API).
List the use cases: every action your system performs. Use verb-noun format: “Login,” “Manage Students,” “Generate Report,” “Process Payment.”
Connect actors to use cases: draw lines from each actor to the use cases they trigger.
Add includes / extends: <> for reused functionality (every transaction includes Login); <> for optional behavior (Print Receipt extends Process Payment).
Draw the system boundary: rectangle around all use cases with the system name at the top. Actors stay OUTSIDE the boundary.
Featured Use Case diagrams by system domain
🎓 School, Student & Library
Student Information System Use Case
Student Registration System Use Case
College Registration System Use Case
University Admission System Use Case
School Management System Use Case
Student Grading System Use Case
Library Management System Use Case
Online Examination System Use Case
Course Registration System Use Case
Employee Attendance Use Case
Student Attendance Use Case
Hostel Management System Use Case
🏥 Hospital, Pharmacy & Healthcare
Hospital Management System Use Case
Pharmacy Management Use Case
🍽️ Hotel, Restaurant & Hospitality
Hotel Management System Use Case
Hotel Reservation Use Case
Online Food Ordering Use Case
Movie Ticket Booking Use Case
Online Ticket Reservation Use Case
Event Management Use Case
🛒 E-commerce, Shop & Inventory
E-commerce Website Use Case
Online Shopping System Use Case
Online Shopping Cart Use Case
Inventory Management Use Case
🏦 ATM, Banking & Authentication
Bank Management Use Case
Credit Card Processing Use Case
Login Use Case
Login and Registration Use Case
Face Recognition Attendance Use Case
🚗 Transport, Travel & Reservation
Online Airline Reservation Use Case
Railway Reservation Use Case
📘 Tutorials & References
UML Use Case Diagram Tutorial (Examples)
About this Use Case diagram collection
Curated since 2015 by PIES Information Technology Solutions, Binalbagan, Negros Occidental, Philippines. Used by 12,000+ BSIT students monthly. Pair each Use Case with the matching ER Diagram and DFD for a complete Chapter 3 documentation set.
Related UML diagram collections
UML Diagrams Library, parent collection, 300+ diagrams
ER Diagrams, 35+ ERDs
Data Flow Diagrams (DFD), 40+ DFDs
Class Diagrams, 30+ Class diagrams
Activity Diagrams, 30+ Activity diagrams
Sequence Diagrams, 35+ Sequence diagrams
Components Diagrams
Deployment Diagrams
Final Year Projects
The Airline Reservation System Use Case Diagram is the behavioral diagram that summarizes activities done in the airline reservation system and its user details. It depicts the graphical representation of …
The UML tutorial use case diagram is one of the UML diagrams that helps in emphasizing the important processes and flow of your project. Through this diagram, your readers and …
The Use Case Diagram for Employee Attendance Management System is the behavioral diagram that summarizes activities done in the employee attendance management system and its user details. It depicts the …
The UML use case diagram for the railway reservation system shows the steps that need to be taken when a user starts up the software. It shows the structure that …
The use case diagram for student information management system is used to show the processes involved when users invoke the software. It depicts the structure of the system behavior. Additionally, …
The UML use case diagram for college registration system is used to show the processes involved when users invoke the software. It depicts the structure of the system behavior. Additionally, …
The use case diagram student registration system is used to show the processes involved when users invoke the software. It depicts the structure of the system behavior. Additionally, the diagram …
The UML use case diagram for university admission system is used to show the processes involved when users invoke the software. It depicts the structure of the system behavior. Additionally, …
The Bank Management System Use Case Diagram is used to show the processes involved when users invoke the software. It depicts the structure of the system behavior. Additionally, the diagram …
The School Management System Use Case Diagram: A flow diagram shows how the software works when it is used. It shows the structure of how the system works. The diagram …
The use case diagram example for online food ordering system is one of the methods used to show the processes involved in online food ordering system. It depicts the system’s …
The Online Movie Ticket Booking System Use Case Diagram is one of the methods used to show the processes involved in online movie ticket booking system. It depicts the system’s …
The UML use case diagram for online ticket reservation system is one of the methods used to show the processes involved in online ticket reservation system. It depicts the system’s …