IBM i Fundamentals

A beginner-friendly explanation of Db2 for IBM i and why the database layer is so tightly integrated with the platform.

Good IBM i maintenance is about managing change safely: source control, review, testing, documentation, and predictable releases.

A practical introduction to CL programming on IBM i, including what it is used for and why it matters in…

SQL on IBM i is the modern way to query and manage Db2 for i data. Beginners can start with…

A beginner-friendly introduction to RPGLE on IBM i, including what it is, why it is still used, and how to…

Performance tuning on IBM i starts with measurement, workload understanding, and small changes that improve real bottlenecks.

IBM i batch work runs on schedules, queues, and jobs. Understanding that flow helps beginners see how the platform handles…

A practical introduction to the IBM i object model, including libraries, objects, members, and how they are used every day.

Debugging on IBM i starts with logs, messages, and the right tools. Beginners can learn to isolate problems without guessing.

A beginner-friendly explanation of the IBM i architecture, including the operating system, integrated database, objects, and the server layer.

IBM i organizes data through libraries, files, members, and SQL access. Understanding those layers makes the platform much easier to…

IBM i and mainframe systems both support serious enterprise workloads, but they are different platforms with different operating models, scale…

Modernizing IBM i does not mean replacing the platform. It usually means exposing existing systems through APIs, SQL, better interfaces,…

A short history of the AS/400 platform lineage and how it evolved into the IBM i environments that run on…

AS400 is the common historical name, while IBM i is the current operating system. This article explains what each term…

AS400 usually means IBM i running on IBM Power hardware. This beginner's guide explains AS/400, IBM i, and IBM Power…