🏢 Spring Boot JPA Employee Management System

A comprehensive backend API built with Spring Boot and JPA to manage Employees, Departments, Projects, and Insurance details in an organization.

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📁 Project Structure

src/
└── main/
    └── java/
        └── com/backend/Backend/
            ├── model/
            │   ├── Department.java
            │   ├── Employee.java
            │   ├── Insurance.java
            │   └── Project.java
            └── resources/
                └── application.properties

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⚙️ Technologies Used

• Java 17+
• Spring Boot 3.x
• Spring Data JPA
• Hibernate
• H2 / MySQL Database
• Maven

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🧬 Entity Relationships

• 🧑‍💼 Employee

  • 🔁 Many-to-One → Department
  • 🔁 Many-to-Many ↔️ Project
  • 🔁 One-to-One → Insurance

• 🏢 Department

  • 🔁 One-to-Many ← Employees

• 🧾 Project

  • 🔁 Many-to-Many ↔️ Employees

• 🛡 Insurance

  • 🔁 One-to-One ← Employee

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🧪 Sample API Endpoints

Method	Endpoint	Description
GET	/employees	Get all employees
POST	/employees	Create new employee
GET	/departments	Get all departments
POST	/projects	Assign project to employees
GET	/insurance/{empId}	Get employee insurance info

(Depends on controller implementation)

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▶️ Run the Application

./mvnw spring-boot:run

or

mvn spring-boot:run

Open in browser: http://localhost:8080

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🛠 Features

• Fully annotated JPA Entity models
• Relationships: One-to-Many, Many-to-Many, One-to-One
• Auto schema generation (ddl-auto=update)
• Configurable DB via application.properties

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🧑‍💻 Author

Made with ❤️ by Dinuki Prarthana
🔗 GitHub: @Dinuki

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📝 License

Licensed under the MIT License.
© 2025 Dinuki Prarthana

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