Fundamentals

A database is an organized collection of data stored and accessed electronically. SQL databases store data in structured tables with fixed schemas and relationships. NoSQL databases offer flexible schemas and horizontal scaling for unstructured data. This guide explains both types and when to use each.

Learn what an API is, how it works, and why it matters — explained in plain English with real-world examples any beginner can understand.

Confused about front-end vs back-end development? This guide breaks down what each one does, the tools they use, and which path fits you best.