Database Architecture & Table Schemas
Understand databases, tables, columns, rows, primary keys, and relational schemas.
What is a Relational Database (RDBMS)?
MySQL is a relational database management system that organizes data into tables consisting of columns and rows. Tables can reference one another using primary keys and foreign keys.
Hands-On Code Examples & Sandbox
1 ExampleKey Concepts • Chapter 01
- •A PRIMARY KEY uniquely identifies each record in a table.
- •NOT NULL prevents empty values in mandatory fields.
- •UNIQUE constraint prevents duplicate entries (e.g. emails).
🎯 Chapter Practice Challenge
Insert a 4th student record with your name and email.
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