Question : What is an AS/400 ?
Answer …
The AS/400, also known as IBM iSeries or IBM System i, is a family of midrange computer systems designed and manufactured by IBM. The name AS/400 stands for Application System/400, and it was first introduced in 1988. It was designed to provide a reliable, secure, and integrated platform for business applications, including accounting, inventory management, customer relationship management, and more.
Key features and characteristics of the AS/400 include :
- Integrated Architecture : The AS/400 is known for its tightly integrated hardware and software. It runs the IBM i operating system (originally known as OS/400), which includes both the operating system and a range of middleware for managing databases, security, networking, and more;
- Reliability and Scalability : AS/400 systems are renowned for their reliability, with many installations running for decades. They are also scalable, meaning they can grow with a business’s needs, offering models that can support small businesses to large enterprises;
- Business-Oriented : The AS/400 was primarily designed for running business applications and handling tasks like financial processing, manufacturing control, and order management;
- RPG Programming Language : One of the most common programming languages used on the AS/400 is RPG (Report Program Generator), a high-level language that was originally created for business applications. Over time, modern languages like Java, SQL, and C++ were also supported;
- Database Integration : The system comes with the DB2 database, which is tightly integrated into the operating system. This database offers high performance, security, and reliability for business applications.
- Backward Compatibility : One of the most remarkable features of the AS/400 (and its successors) is its backward compatibility. Newer models of the AS/400 can run applications written for much older versions of the system, ensuring long-term support for businesses that rely on legacy software;
- Security : The system is also highly secure, with built-in features like user authentication, data encryption, and system auditing. This makes it a popular choice for industries with stringent security requirements, such as finance and healthcare.
Evolution of the AS/400 :
- IBM iSeries : The AS/400 was rebranded as the iSeries in 2000, with enhanced capabilities and support for modern technologies;
- IBM System i : In 2006, IBM renamed it the System i, further expanding its compatibility with new technologies and architectures;
- IBM Power Systems : In 2008, the System i line was consolidated under the IBM Power Systems umbrella, which now includes the IBM i operating system as one of its main offerings. This system is still in use today and continues to be popular for enterprise-level applications.
In summary, the AS/400 is a powerful, secure, and reliable midrange system, with a rich history in enterprise computing. Despite its age, the platform is still in use today in many industries because of its stability, scalability, and the continued development of IBM i.
Source : OpenAI …