AiTechWorlds
Learn databases and SQL with the best GitHub repositories — practical SQL courses and database internals built from scratch. Master querying and how databases actually work, for free.
8 repositories
cstack
Build a SQLite clone from scratch in C
A step-by-step tutorial that builds a simple database (SQLite clone) from scratch.
What you get
What you'll learn
Best for: Developers curious how databases work inside.
pingcap
A roadmap to learn databases deeply
A curated learning path covering database theory, storage engines, and distributed systems.
What you get
What you'll learn
Best for: Engineers going deep on database internals.
kamranahmedse
The SQL learning roadmap
The SQL track of the popular developer-roadmap covering what to learn for databases.
What you get
What you'll learn
Best for: Beginners learning SQL systematically.
treffynnon
A consistent SQL style guide
A style guide for writing clean, consistent, maintainable SQL.
What you get
What you'll learn
Best for: Teams standardizing SQL.
mgramin
Curated database tools
A curated list of database tools for development, administration, and monitoring.
What you get
What you'll learn
Best for: Developers and DBAs picking tools.
postgres
The world’s most advanced open DB
The PostgreSQL mirror — the source of the leading open-source relational database.
What you get
What you'll learn
Best for: Engineers curious about a real database.
XD-DENG
Practical SQL exercises
A set of practical SQL exercises with solutions for hands-on learning.
What you get
What you'll learn
Best for: Beginners practicing SQL.
redis
The in-memory data store
Redis — the popular in-memory key-value store used for caching, queues, and more.
What you get
What you'll learn
Best for: Engineers learning caching and NoSQL.
Practical, project-based SQL courses and the “build your own database” tutorials teach both querying and internals.
Follow a “build your own database” tutorial (e.g., a SQLite clone) to learn storage, B-trees, and query execution.
Very — analysts, marketers, and PMs all benefit from SQL for data analysis.
Pair these with our learning roadmaps, free courses, and notes library.
