For more on SQL itself, check out this article. SQLite is an implementation of a relational database, specifically aimed for embedded scenarios. It’s ideal for the likes of an Android app.

Most Android apps will need to persist user data at sometime. There are different ways to store user data, but SQLite databases are a very convenient and speedy method of saving user (or app) data ...

The tutorial has two parts: Part one introduces the example app, and how to use a content provider with a local SQLite database. Part two covers data synchronisation.