https://github.com/anthonylucky1909/retaildb

Online retail application databases are some of the most well-known SQL practice projects as the importance of e-commerce continues to grow.
https://github.com/anthonylucky1909/retaildb

database-management sql

Last synced: 9 months ago
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Online retail application databases are some of the most well-known SQL practice projects as the importance of e-commerce continues to grow.

• Host: GitHub
• URL: https://github.com/anthonylucky1909/retaildb
• Owner: anthonylucky1909
• Created: 2023-04-11T00:45:47.000Z (about 3 years ago)
• Default Branch: master
• Last Pushed: 2025-08-20T14:53:36.000Z (10 months ago)
• Last Synced: 2025-08-20T16:40:59.142Z (10 months ago)
• Topics: database-management, sql
• Language: Python
• Homepage:
• Size: 1.82 MB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# 🚀 Database Fundamentals: A Deep Dive into SQL  

[![License](https://img.shields.io/github/license/anthonylucky1909/DatabaseFundamentals.svg)](LICENSE)

[![MySQL](https://img.shields.io/badge/MySQL-8.0.23-blue?logo=mysql&logoColor=white)](https://www.mysql.com/)

[![VS Code](https://img.shields.io/badge/Editor-VS%20Code-0078d7?logo=visualstudiocode)](https://code.visualstudio.com/)

[![OS](https://img.shields.io/badge/OS-Ubuntu%2020.04%20LTS-orange?logo=ubuntu)](https://ubuntu.com/)

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## 🎯 Environment

- **SQL Version**: MySQL 8.0.23 🗃️  

- **Tools**: VS Code, MySQL Workbench 💻  

- **OS**: Ubuntu 20.04 LTS 🐧  

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## 🧑‍💻 Highlights

- **Stored Procedures**: Query customer orders, check employee seniority  

- **Functions**: Calculate avg. order price, total product sales  

- **Constraints & Triggers**: Limit product price, auto-update employee salary  

- **Queries**: Top-paid employees, add/remove customers  

- **Dynamic SQL**: Adjust salaries + query customer info in one go  

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## 📊 Database Schema  

![Database Schema](scheme.png)

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## ⚡ Key Challenges & Solutions  

- **Complex Joins** → Optimized with indexing strategies  

- **Data Integrity Rules** → Enforced using triggers & constraints  

- **Slow Queries** → Improved via indexing + query design  

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## 📚 References  

- [MySQL Docs](https://dev.mysql.com/doc/)  

- MIT OpenCourseWare – Database Systems 📖  

- Stack Overflow – query optimization 💬  

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✨ Thanks for checking out this project! 🚀