iSeries (AS/400) Introduction to Subfile Programming

Introduction

This course is intended for RPG programmers either coding with RPGLE or RPG methods developing applications which require multiple records to be displayed, paged through and interfaced with other applications, known as subfiles. The course covers the definition of a data subfile. Error message subfile and all subfile DDS keywords. By the end of the course you will have coded a load-all, expanding, single page and data entry subfile program and be able to identify and choose the right subfile for an application.

What you will learn

On completion of this course, you will be able to:

• Subfile Concepts.
• Loading Techinques (Load ALL, Expanding, Single Page)
• Introduction to SFLxxx DDS Keywords
• Declare Subfile(s) to an RPG program & control relative record numbers.
• Design & code a structured "Load All" Subfile Program.
• Use page control keywords such as SELSCROLL, SFLRCDNBR.
• Change attributes of Subfile content when required.
• Process & validate Subfile input.
• Use Hidden fields in the Subfile.

Who should attend

RPGIV or RPG/400 programmers developing and maintaining subfile applications.

Pre-requisites

Delegates should attend the RPGIV Programming (ISR4P) or RPG/400 Programming (ISRPP) course followed by a period of practical work in RPG development prior to attending this course, or have equivalent hands on experience.

Course content