https://github.com/Adil-Bikiev/Employee-Database-Management
A Java-based CRUD application to manage employee data using PostgreSQL and JDBC. This project supports operations like ➕ adding, 📖 retrieving, ✏️ updating, and ❌ deleting employee records. Built with Maven for dependency management and modularity.
https://github.com/Adil-Bikiev/Employee-Database-Management
database java java-jdk sql test
Last synced: 8 months ago
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A Java-based CRUD application to manage employee data using PostgreSQL and JDBC. This project supports operations like ➕ adding, 📖 retrieving, ✏️ updating, and ❌ deleting employee records. Built with Maven for dependency management and modularity.
- Host: GitHub
- URL: https://github.com/Adil-Bikiev/Employee-Database-Management
- Owner: EMMMABK
- License: mit
- Created: 2024-11-24T08:44:40.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2024-11-24T18:07:36.000Z (over 1 year ago)
- Last Synced: 2024-12-27T10:12:27.793Z (over 1 year ago)
- Topics: database, java, java-jdk, sql, test
- Language: Java
- Homepage:
- Size: 141 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# Employee Database Management System
This is a simple Java application that interacts with a relational database to manage employee data. It uses JDBC to perform CRUD (Create, Read, Update, Delete) operations on an `employee` table in the `employee_db` database. The application consists of an `Employee` entity class and an `EmployeeData` class for handling database operations.
---
## Features
- **Create**: Add new employees to the database.
- **Read**: Fetch details of a specific employee or list all employees.
- **Update**: Modify details of an existing employee.
- **Delete**: Remove an employee from the database.
---
## Requirements
- **Java Development Kit (JDK)**: 8 or higher.
- **Apache Maven**: For dependency management.
- **PostgreSQL Database**: As the relational database system.
- **PostgreSQL JDBC Driver**: Added as a Maven dependency.
---
## Database Setup
1. Install and start **PostgreSQL Server**.
2. Open a PostgreSQL client (e.g., pgAdmin or terminal).
3. Create the `employee_db` database:
```sql
CREATE DATABASE employee_db;
```
4. Connect to the `employee_db` database:
```sql
\c employee_db
```
5. Create the `employee` table:
```sql
CREATE TABLE employee (
id SERIAL PRIMARY KEY,
name VARCHAR(100) NOT NULL,
position VARCHAR(100) NOT NULL,
salary DOUBLE PRECISION NOT NULL,
hire_date DATE NOT NULL
);
```
---
## How to Run the Program
### Step 1: Clone the Repository
Clone the project repository from GitHub:
```bash
git clone https://github.com/your-username/employee-management-system.git
cd employee-management-system
```
### Step 2: Build the Project
Use Maven to build the project:
```bash
mvn clean install
```
### Step 3: Configure Database Connection
Update the database connection details in the `EmployeeData` class:
```java
private static final String URL = "jdbc:postgresql://localhost:5432/employee_db";
private static final String USER = "postgres"; // Replace with your PostgreSQL username
private static final String PASSWORD = "yourpassword"; // Replace with your PostgreSQL password
```
---
## Sample Operations
### Create an Employee
The application will insert a new employee into the `employee` table.
**Database State:**
```sql
INSERT INTO employee (name, position, salary, hire_date)
VALUES ('Student AlaToo', 'HR Manager', 60000, '2023-01-15');
```
```
SELECT * FROM employee WHERE id = 1;
```
```
UPDATE employee
SET salary = 65000
WHERE id = 1;
```
```
DELETE FROM employee WHERE id = 1;
```
---
## Project Structure
```
employee-database-management-system
├── src
│ ├── main
│ │ ├── java
│ │ │ └── com.example
│ │ │ ├── App.java # Main application
│ │ │ ├── Employee.java # Employee entity class
│ │ │ └── EmployeeData.java # Database operations class
│ └── test
│ └── java
│ └── com.example
│ └── AppTest.java # Unit tests (optional)
└── pom.xml # Maven configuration
```