In this chapter, we covered quite a lot of information. We created an automated way of creating and distributing our database, models to represent the tables in the database, and a few controllers to manage and interact with our data. We also created a simple key-value authentication system to protect our data. Many of the methods we used in this chapter, and the code we wrote, can be reused and expanded upon in later chapters. Before continuing, be sure to take a look at all the classes we referenced in the chapter, in the official Yii documentation, so that you can better understand them.