Learn RPG with Real Code Examples

Install IBM i (AS/400) system or emulator

Set up development environment (RDi or SEU)

Configure DB2 files for input/output

Test simple calculation/report programs

Verify IBM i environment paths and libraries

Install IBM i or emulator

Set up development IDE (RDi or SEU)

Configure DB2 database files

Create libraries for source and output

Compile and test programs

RPG source files (.RPG, .rpgle)

DB2 table definitions

Library paths for IBM i

Batch job configurations

Report layout specifications

CRTRPGMOD - create RPG module

CRTBNDRPG - compile RPG program

CALL programName - run program

WRKJOB - monitor job execution

DSPPGM - display program info

Used globally in enterprises running IBM i

Supports multiple languages in business data

Date and numeric formats configurable

Reports adaptable to local standards

Documentation available in multiple languages

Stable and well-documented in IBM i ecosystem

Training and tutorials available for legacy systems

Accessible through RDi IDE and emulators

Strong backward compatibility

Interactive and batch execution modes

Text-based interactive screens

Report outputs formatted for printing

Optional GUI via modern APIs

Console and terminal-based execution

Legacy green-screen style terminals

Variables store program data

Files maintain persistent records

Subprocedures modularize logic

DB2 tables provide structured data storage

Program flow managed by procedural sequence

Files (input/output) and records

Variables (numeric, character, date)

Arrays in modern RPG IV

DB2 tables and queries

Temporary storage for calculations