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In the first lesson, you will learn about SQL on its own, using a command line tool. This will give you a foundation of knowledge about databases.
In the next lesson, you'll bring your SQL knowledge into the Android context by building out the first piece of an app to help with a pet shelter.
In lesson 3 you'll learn about Content Providers, which are instrumental in allowing your app to keep its data clean and to share that data, if you choose, with other apps.
In this lesson, you'll learn more about Content Providers and you'll finish the Pets app!