About This Guide

This guide provides information that shows how to use theILE RPG f compiler (ILE RPG) in the Integrated Language. EnvironmentILERPG is an implementation of the RPG IV language on the AS/400 system with the O System/400 (OS/400) operating system. Use this guide to create and applications from RPG IV source.

This guide shows how to:

¹ Enter RPG IV source statements

¹Create modules

¹Bind modules

¹ Run an ILE program

¹ Call other objects

¹ Debug an ILE program

¹Handle exceptions

¹ Define and process files

¹Access devices

¹ Convert programs from an RPG III format to RPG IV format

¹Read compiler listings

Who Should Use This

Guide

 

 

 

 

 

 

 

 

This guide is for programmers who

are

familiar

with

the

RPG

programmi

guage, but who want to learn how

to use it in the ILE framework. T

for programmers who want to convert

programs

from

the RPG

III

to th

format. It is designed to guide

you

in

the use

of the

ILE

RPG

AS/400

system.

 

 

 

 

 

 

 

 

Though this guide shows how to use the RPG IV in an ILE framework, provide detailed information on RPG IV specifications and operations. detailed description of the language,ILE RPG seefor theAS/400 Reference,

SC09-2508-02 .

Before using this guide, you should:

¹ Know

how to use applicable AS/400 menus and displays, or Control Langu

(CL)

commands.

¹Have the appropriate authority to the CL commands and objects de here.

¹Have a firm understanding of ILE as describedILE Coinceptsdetail, in the SC41-5606-03.

Copyright IBM Corp. 1994, 1999

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IBM AS/400 manual About This Guide, Who Should Use This, Iii

AS/400 specifications

The IBM AS/400, now known as the IBM iSeries, is a midrange computer system that has been a cornerstone of enterprise computing since its introduction in 1988. Designed to provide a robust platform for business applications, the AS/400 is celebrated for its reliability, scalability, and integrated database capabilities.

One of the key features of the AS/400 is its Integrated Operating Environment, which blends hardware and software resources seamlessly. This integration allows businesses to execute diverse workloads, ranging from traditional applications to modern web-based services, all on a single platform. The operating system, OS/400 (now IBM i), offers a rich set of APIs and tools for developers, simplifying application development and management.

Another standout characteristic of the AS/400 is its built-in database, DB2 for i. This powerful relational database management system allows for efficient data handling and provides advanced features such as support for SQL, XML, and JSON, making it easier for businesses to manage their data and integrate it with other systems. The database's tight integration with the operating system enables high performance and security.

In terms of scalability, the AS/400 can accommodate small businesses as well as large enterprises, with the ability to support hundreds of users simultaneously. Its architecture allows for easy upgrades in hardware, meaning that organizations can scale their systems without replacing the entire infrastructure.

Security is another critical attribute of the AS/400. With a sophisticated security model, it offers built-in user authentication, access control, encryption, and auditing capabilities to protect data and applications from unauthorized access.

The AS/400 also supports multiple programming languages, including RPG, COBOL, Java, and PHP, giving organizations the flexibility to choose the development tools that best fit their needs. This diversity helps maintain legacy applications while also developing new ones that leverage modern technologies.

Moreover, the platform supports both traditional green-screen interfaces and modern graphical user interfaces, allowing organizations to transition smoothly into contemporary user experience paradigms.

Overall, the IBM AS/400 stands out as a resilient, flexible, and secure computing platform that enables organizations to effectively manage their business operations, streamline processes, and adapt to changing market demands. Its unique combination of integrated features and capabilities ensures that it remains relevant in today's fast-paced technology landscape.