Видео с ютуба Mainframe Basics Tutorial
What are Mainframes?
COBOL in 100 seconds
Mainframe - Overview
What is a Mainframe? The Ultimate Guide to the World's Most Powerful Computing Platform. #podcast
Руководство для начинающих по основным командам мэйнфреймов | Всё о мэйнфреймах
JCL Refresher in One Hour
z/OS Tutorial for New Users 1: The Basics
What is Mainframe Computer | Introduction to Mainframe | How to become a Mainframe programmer?
JCL Tutorial | JCL Complete Reference | JCL Complete Tutorial | JCL Course | Mainframe JCL Tutorial.
What is mainframe Testing?
TDQ CICS | CICS Introduction | Mainframe CICS Basics |CICS Intro - Mainframe CICS Tutorial