With subfiles you can create a display file with lists of items. Let's see how that's done.

In this chapter you will see how to create menus and screens in AS400.

Implementing modules can be extremely useful, especially in big applications because it allows the reuse of code in a fairly simple manner.

RPG is one of the AS400 platform pillars. Originally designed as a query tool it has been substantially enlarged, it is currently a very powerful language. Let's see how you can use it.

You can use files to define tables, executable code, etc. In this chapter we'll try to explain some basic concepts of working with files.

You can use a library in AS/400 just as you would use a folder in Windows to organize your files, there are some differences, of course. Let's see how does a library work in AS400.

In AS/400 you can use SQL to work with tables and table data.  There are also some very useful built-in functions you should know about.

To navigate through the AS/400 system you must know some commands and how to use them. There is also a simple syntax that can help you remember some forgotten command.

This tutorial is an introduction to the AS/400 (System i5) system and to the RPG and DDS programming languages. This is the first from a series of nine articles covering several aspects of the system.