In this chapter, you read the history of SQL, the impact of relational databases, and the use of a mobile SQL database, namely, SQLite. This chapter outlined the history and beginnings of SQLite and how it has grown to be the most used database on mobile devices so far. In the next chapter, you will learn about the components of database concepts and how to design an SQLite database. The next chapter will show you the basic elements of design for an SQLite database.