Systems30 min · Lesson 1 of 3

SQL Syntax & Normalization

The core of data integrity. Understanding 1NF, 2NF, 3NF and the power of JOINs.

The Relational Model

Databases aren't just for storage; they are for ensuring Data Integrity. By following normalization rules, we prevent data duplication and update anomalies.

The power of JOINs

SQL allows us to pull related data across tables efficiently. Understanding Inner, Left, and Full Outer Joins is the first step toward complex data reporting.