An Introduction to Functions › Understanding Functions

Understanding Functions

A function defines a process that operates on files and fields in your database. CA 2E allows you to link functions together to create larger processes that become the building blocks of your application. You can link functions together as components to define an application system. You can implement several separate functions as a single HLL program. There are two ways to implement a function:

• External—the function is implemented as a separate HLL program
• Internal— the function is implemented as source code within the calling function