Database

Learn the fundamentals of databases, including SQL, NoSQL, CRUD operations, and connecting databases to backend frameworks.

📄️ Database Introduction

Hey, everyone! In this guide, we’re going to explore Databases, the backbone of modern applications.

📄️ Database Basics & SQL Fundamentals

This guide is your step between the Database Introduction and solving real SQL problems.

📄️ Database Practice Sheet

A curated path of 20+ real SQL problems from LeetCode to help you practice database fundamentals. Organized by difficulty, each item includes a direct link to a working problem.