iSeries (AS/400) RPG/400 Programming

Introduction

RPG/400 has proven to be one of the most popular programming languages for application development on the iSeries. This intensive course provides delegates with the skills to develop RPG/400 programs on the iSeries.

What you will learn

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

• Code, compile and test screen enquiries.
• Code, compile and test reports.
• Code arithmetic operations in RPG/400.
• Use the database in RPG/400 programs.
• Write a file maintenance program with validation and error handling.
• Amend existing programs to add further code.
• Use externally described files in RPG/400.
• Use structured development techniques.

Who should attend

Applications development staff who will be using RPG/400 to develop or maintain applications written with RPG/400 on the iSeries.

Pre-requisites

iSeries SYSTEM FACILITIES and iSeries PROGRAM DESIGN should be attended prior to this course. The many practical exercises on this RPG/400 course require the delegate to code using PDM, SEU, SDA and DDS, all of which are taught on the iSeries System Facilities course.

Course content

• Physical and logical file DDS.
• Field reference file.
• Level checks.
• Printer files and printer file DDS.
• The structure of a report and record formats.
• Programming on the iSeries (AS/400).
• RPG specification types and sequence.
• Fields, constants, indicators and figurative constants.
• Logic for a report program.
• Creating a report program.
• Using structured coding techniques.
• Accessing the database.
• Display file DDS.
• Processing function keys and conditional function keys.
• Enquiry program logic.
• Writing an enquiry program with RPG/400.
• Using arithmetic in RPG/400.
• Calculation of totals and averages in a report.
• Use of subroutines to structure programs.
• Calling other programs and passing parameters.
• File handling in RPG/400.
• Partial key processing.
• Using debug and on-line debug.
• Data structures and named constants.
• Introduction to array processing.
• Using named data areas and the LDA.
• Reading and updating a data area in RPG/400.
• Passing parameters with data areas.
• Concepts and logic of file maintenance.
• Coding a file maintenance program in RPG/400.
• File maintenance operations and record locking.
• Data validation and error messages.
• Validation routines in RPG/400.
• Using message files for error messages.

Materials

A course manual with supporting documentation is provided. The course has many practical sessions to allow delegates to develop report and enquiry programs, a file maintenance program, and a load-all subfile program. Delegates will also be amending programs during this course.

Schedule - Dates on Request