In this module, you get to create user-defined functions. These functions are stored inside the database and called within SQL queries or other SQL scripts.
By the end of this module you will be able to:

1. List the uses of a function and identify correct syntax
2. Create and execute a function that returns a number, text, or date value
3. List uses of a function that returns a Boolean value

The next lesson describes what it means to create a function using PL/SQL.