In our SQL Basics course, we'll often show you tables and describe them a little bit before we start using them. To do this, we'll use the following notation:

pet (id, name, owner_id)

The above means that we have a table named pet which has the following columns: id, name, and owner_id. This information will be enough for you to work with the tables in our exercises.

You can always review the tables in the database when you click the Database button on the right-hand side of the exercise screen.