Ecosystem
Learning Lab
Interactive lessons & exercises — learn by building, step by step.
All 35
Algorithms 4
Data Structures 4
Databases 3
Math 2
Networking 2
Programming 10
Web Development 10
D
Database Normalization
DatabasesLearn 1NF, 2NF, and 3NF by transforming messy tables into well-structured databases step by step.
S
SQL Joins
DatabasesUnderstand INNER, LEFT, RIGHT, and FULL joins with interactive Venn diagrams and a live SQL sandbox.
S
SQL SELECT Basics
DatabasesLearn to query databases with SQL SELECT — filter, sort, and transform data interactively.