Learn RPG-IV-AS400 with Real Code Examples

IBM i application development services

Legacy system modernization consultancy

Batch processing optimization

ERP and financial system maintenance

Training and support for RPG IV developers

Further free-form syntax enhancements

Better integration with web and APIs

AI-assisted code suggestions in RDi

Enhanced DB2 SQL performance optimization

Continued backward compatibility with legacy RPG

Non-IBM i environments

Modern web/mobile front-end applications

High-performance computing unrelated to business apps

Microservices requiring cloud-native languages

Rapid prototyping outside legacy systems

RPG IV enables business-critical applications on IBM i systems.

Supports modular programming, DB2 integration, and batch/interactive workflows.

Evolved from RPG III with free-form syntax and service programs.

Essential for legacy ERP, transaction processing, and enterprise reporting.

Stable, optimized, and widely used in IBM i enterprise environments.

Is RPG IV still relevant? -> Yes, for IBM i enterprise applications.

Can RPG IV access DB2? -> Yes, with embedded SQL.

Do I need fixed-format? -> Free-form is modern standard; fixed-format still supported.

Can I create interactive screens? -> Yes, using display files.

Is RPG IV portable outside IBM i? -> No, it's IBM i-specific.