In this course, we're going to work with Microsoft's sample database for SQL Server named Northwind. It describes a fictional store and its customers, suppliers, and orders. You can find the original database at Microsoft's GitHub repository. The database has been slightly modified to better suit the needs of this course.
In upcoming parts, we're going to write lots of queries that will aggregate data from multiple tables to create real SQL reports. For now, let's get to know the tables we'll be using.
If you want to see the database structure and data at any point, you can use the Database icon on the right side of the screen.