CampusConnect – University Management Backend System.
CampusConnect is a backend application that implements a real-world university management system. It models core academic and administrative operations found in higher education institutions, with a strong focus on correctness, data integrity, and clean backend architecture.
Overview.
The system manages users, authentication, and academic structures such as faculties, departments, courses, students, and instructors. It is designed to reflect real institutional workflows while enforcing proper entity relationships, role-based access control, and transactional consistency.
CampusConnect is not a simple CRUD application. It simulates how real university systems are structured and managed at the backend level.
Motivation
This project was built to practice and demonstrate real-world backend engineering concepts, including:
Authentication and authorization flows
Role-based access control
Proper entity relationship modeling
Transaction management and data integrity
Clean separation of concerns using DTOs and mappers
The goal was to move beyond tutorials and design a system that behaves like a production-grade backend.
Core Entities
User
StudentProfile
InstructorProfile
Faculty
Department
Course
All entities are modeled to mirror real-world university structures and dependencies.
Authentication & Authorization
The User entity is the central entry point of the system.
Every user must be registered and authenticated before accessing protected resources.
Authentication is handled using JWT-based security.
Roles are defined using enumerations:
STUDENT
INSTRUCTOR
ADMIN
Depending on the assigned role, a user gives rise to either a StudentProfile or an InstructorProfile.
Entity Relationships
A User can be associated with one StudentProfile or one InstructorProfile.
Student and Instructor profiles are fully dependent on the User entity.
Profiles are created during registration using setUser(user) and persisted via the User repository.
This design ensures:
A single source of truth for authentication
Strong referential integrity
Clear ownership of dependent entities
Clean and maintainable domain modeling
Admin Privileges
Users with the ADMIN role have elevated permissions and can:
Perform full CRUD operations on all entities
Manage faculties, departments, and courses
Assign instructors, heads of department, and academic roles
Oversee system-wide configurations
Features Implemented
Role-based authentication (Admin, Student, Instructor)
Faculty management (create, update, assign dean, retrieve)
Department management
Course management
Student and Instructor profile management
Secure entity relationships and validations
DTO-based API responses to control data exposure
Proper handling of transactional updates
Key Design Decisions
The User entity acts as the aggregate root for authentication and authorization.
StudentProfile and InstructorProfile cannot exist without a User.
DTOs are used to prevent lazy-loading issues and avoid leaking persistence-layer entities.
Referential integrity is enforced both at the application level and the database level.
Updates that modify relationships are handled within proper transaction boundaries.
Tech Stack
Java
Spring Boot
Spring Security
JPA / Hibernate
RESTful APIs
PostgreSQL
JWT-based authentication
Running the Project
Configure PostgreSQL credentials in application.properties
Run the application using Maven
Access the API at http://localhost:8080/api/v1
Future Improvements
Course enrollment and academic session tracking
Level-based course visibility and progression rules
Audit logging for administrative actions
Pagination and filtering for large datasets
Fine-grained permission policies
Project Focus
CampusConnect demonstrates:
Real-world backend system design
Proper use of entity relationships
Role-based access control
Transactional integrity
Scalable and maintainable backend architecture