• Lesson 1
  Database Basics
• Lesson 2
  Database Tables
• Lesson 3
  Database Schema
• Lesson 4
  Structured Query Language
• Lesson 5
  Database Select Functions

Lesson 2

Second step is to create a table —

All seems well at this point. I concluded that if Unique is in blue it is off. If in black Unique is turned on and will not allow duplicate content for the fields indicated.

Third step, enter some records.