Enterprise Task Management Platform

Full-stack web application with PHP, Apache, and SQL database

Project Overview

Led development of a full-stack web application using PHP, Apache, and SQL database with comprehensive Entity-Relationship modeling in Spring 2022. The implementation features normalized database design supporting user authentication, task tracking, and reporting capabilities with a web-based interface for enterprise task management workflows.

System Architecture

Full-Stack Implementation

  • Frontend: HTML5, CSS3, JavaScript with responsive design
  • Backend: PHP server-side processing and business logic
  • Database: MySQL with normalized relational design
  • Web Server: Apache HTTP server configuration
  • Architecture: Model-View-Controller (MVC) pattern

Database Design

  • Entity-Relationship Modeling: Comprehensive ER diagram design
  • Normalized Schema: Third normal form (3NF) implementation
  • Referential Integrity: Foreign key constraints and cascading updates
  • Performance Optimization: Indexed columns for query efficiency

Key Features

User Management System

  • Authentication: Secure login/logout with password hashing
  • Authorization: Role-based access control (Admin, Manager, Employee)
  • User Profiles: Complete user information management
  • Session Management: Secure session handling and timeout controls

Task Management Core

  • Task Creation: Detailed task specification with metadata
  • Assignment System: Multi-user task assignment capabilities
  • Priority Levels: Configurable priority and urgency settings
  • Status Tracking: Real-time task status updates and progression
  • Due Date Management: Deadline tracking with alert notifications

Reporting and Analytics

  • Progress Reports: Visual task completion dashboards
  • Performance Metrics: User productivity analytics
  • Time Tracking: Task duration and effort estimation
  • Export Functionality: CSV and PDF report generation

Technical Implementation

Database Schema

-- Core entities with relationships
CREATE TABLE users (
    user_id INT PRIMARY KEY AUTO_INCREMENT,
    username VARCHAR(50) UNIQUE NOT NULL,
    email VARCHAR(100) UNIQUE NOT NULL,
    password_hash VARCHAR(255) NOT NULL,
    role ENUM('admin', 'manager', 'employee'),
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

CREATE TABLE tasks (
    task_id INT PRIMARY KEY AUTO_INCREMENT,
    title VARCHAR(255) NOT NULL,
    description TEXT,
    assigned_to INT,
    created_by INT,
    priority ENUM('low', 'medium', 'high', 'urgent'),
    status ENUM('pending', 'in_progress', 'completed', 'cancelled'),
    due_date DATE,
    FOREIGN KEY (assigned_to) REFERENCES users(user_id),
    FOREIGN KEY (created_by) REFERENCES users(user_id)
);

PHP Backend Architecture

  • MVC Pattern: Separation of concerns with clear layer boundaries
  • Database Abstraction: PDO for secure database interactions
  • Input Validation: Server-side validation and sanitization
  • Error Handling: Comprehensive error logging and user feedback

Security Implementation

  • SQL Injection Prevention: Prepared statements and parameterized queries
  • XSS Protection: Input sanitization and output encoding
  • CSRF Protection: Token-based request validation
  • Password Security: Bcrypt hashing with salt generation

Enterprise Features

Workflow Management

  • Task Dependencies: Complex task relationship modeling
  • Approval Workflows: Multi-level task approval processes
  • Notification System: Email alerts for task updates and deadlines
  • Audit Trail: Complete activity logging for compliance

Scalability Considerations

  • Database Optimization: Query optimization and indexing strategies
  • Caching Layer: Session and database query caching
  • Modular Architecture: Component-based design for feature extension
  • Performance Monitoring: Query performance analysis and optimization

Quality Assurance

Testing Framework

  • Unit Testing: PHP unit tests for business logic validation
  • Integration Testing: End-to-end workflow testing
  • Security Testing: Vulnerability assessment and penetration testing
  • Load Testing: Multi-user concurrent access testing

Code Quality

  • Documentation: Comprehensive code documentation and API reference
  • Version Control: Git-based development workflow
  • Code Standards: PSR-4 coding standards compliance
  • Error Logging: Structured logging for debugging and monitoring

Use Cases and Applications

This enterprise platform addresses:

  • Project Management: Complex project task coordination
  • Team Collaboration: Multi-departmental task sharing
  • Resource Planning: Workload distribution and capacity planning
  • Compliance Tracking: Audit trail and regulatory compliance
  • Performance Analytics: Team productivity measurement

Technologies Used

  • PHP for server-side application logic
  • MySQL for relational database management
  • Apache for web server deployment
  • HTML5/CSS3/JavaScript for frontend development
  • Bootstrap for responsive UI framework
  • jQuery for enhanced user interactions

The project demonstrates full-stack web development capabilities, database design expertise, and enterprise software engineering practices essential for modern web application development and business process automation.