ILE Application Using CRTRPGMOD

Job

XY Activation Group

*PGM(X)

RPG

*PGM(Y)

RPG *MODULE(Y1)

RPG *MODULE(Y2)

RPG *MODULE(Y3)

RPG *MODULE(Y4)

Figure 8. Single-Language Application Using CRTRPGMOD and CRTPGM

The call from program X to program Y is a dynamic call. The calls am modules in program Y are static calls.

See “Effect of ILE” on page 26 for details on the effects of ILE application handles calls, data, files and errors.

Mixed-Language ILE Application Scenario

In this scenario, you create integrated mixed-language applications. module, written in one ILE language, calls procedures written in anothe guage. The main module opens files that the other modules then share of the use of different languages, you may not expect consistent b However, ILE ensures that this occurs.

Figure 9 on page 30 shows the run-time view of an application containing language ILE program where one module calls a non-bindable API, QUSCRTU (Create User Space).

Chapter 3. Program Creation Strategies29

Page 52 Page 54
Page 53
Image 53
IBM AS/400 manual Mixed-Language ILE Application Scenario, Single-Language Application Using Crtrpgmod and Crtpgm
Page 52 Page 54

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.
Top Page Image Contents