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Introduction to mainframe computing

Intended for

Future mainframe systems programmers, operators or support professionals, without a specific IT background.


No specific previous knowledge is required.

Training method

Besides the theoretical explanations, a lot of time is spent on practical examples.

Course leader

Koen De Backer, Guido Indesteege.


1 day.


No public sessions are currently scheduled. We will be pleased to set up an on-site course or to schedule an extra public session (in case of a sufficient number of candidates). Interested ? Please contact ABIS.


This course gives participants without a specific background a general overview of the basic principles and techniques of the IBM mainframe world.

At the end of this course the participant will:

  • be familiar with the basic architectures and technologies of hardware, networks, communication used in a mainframe environment;
  • be familiar with the functions and the types of the IBM mainframe operating systems;
  • understand the different kinds of applications and how they work in a typical mainframe environment;

Main topics

  • Computer technology basics

computer architecture • binary data • CPU • memory • I/O • IBM mainframe

  • Operating systems:

functions • OS overview (MVS-z/OS, z/VM, z/Linux)

  • Data communication and networks:

OSI model • SNA • TCP/IP • Internet

  • Data organisation:

Dataset types • storage media • database types (DB2, IMS) • data warehouses

  • Applications:

traditional & object oriented • programming languages (COBOL, PL/1, Java) • runtime environments (CICS, IMS, WebSphere)

  • Management:

systems management • network management • application management • ITIL