Summary

Joins are one of the most important and powerful features in SQL, and using them effectively requires a basic understanding of relational database design. In this lesson, you learned some of the basics of relational database design as an introduction to learning about joins. You also learned how to create an EQUIJOIN (also known as an INNER JOIN, which is the most commonly used form of join. In the next, lesson, you'll learn how to create other types of joins.