SQL Projects Portfolio

A collection of SQL projects demonstrating database design, data analysis, and ETL processes.

Projects Done

Education ROI Analysis

Analysis of higher education return on investment using comprehensive student loan considerations.

Key Features

• Dimensional data modeling
• Complex ETL pipeline
• Financial calculations and ROI analysis
• Demographic analysis
• Interactive dashboards

Technologies

• PostgreSQL
• Python (pandas, psycopg2)
• ETL automation

Future Projects (Planned)

[Retail Analytics System]

• Customer segmentation
• Inventory management
• Sales prediction
• Vendor performance analysis

[Healthcare Operations Database]

• Patient records management
• Treatment tracking
• Insurance claims processing
• Staff scheduling

[Financial Transaction System]

• Account management
• Transaction processing
• Fraud detection
• Reporting system

Technical Skills Demonstrated

Database Design

• Dimensional modeling
• Normalization
• Indexing strategies
• Constraints and relationships

SQL Features

• Complex JOIN operations
• Window functions
• CTEs and subqueries
• Performance optimization
• Stored procedures and functions

Data Analysis

• Statistical calculations
• Trend analysis
• Financial modeling
• Report generation

Best Practices

• Query optimization
• Database maintenance
• Documentation
• Version control

Setup Instructions

PostgreSQL Setup

1. Install PostgreSQL
2. Create new database
3. Run schema creation scripts
4. Import sample data

Project Structure

sql_projects/
├── education_roi_analysis/
│   ├── schema/
│   ├── queries/
│   └── etl/
├── retail_analytics/
└── healthcare_operations/

Contributing

Interested in contributing? Please read the contributing guidelines and submit a pull request.

License

This project is licensed under the MIT License - see the LICENSE file for details.