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Introduction to the New Mainframe: IBM z/VSE Basics by Martin Walbruehl, Joerg Schmidbauer, Ingolf Salm, Bill Ogden, Wayne O'Brien, Wilhelm Mild, Marco Kroll, Jerry Johnston, Helmut Hellner, Hans Joachim Ebert, Wolfgang Bosch, Mike Ebbers

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Introduction to IBM z/VSE and the mainframe environment
Welcome to mainframe computing. We begin this text with an overview of the mainframe computer and its place in today’s information technology (IT) organization. We explore the reasons why public and private enterprises throughout the world rely on the mainframe as the foundation of large-scale computing.
We describe the types of workloads that are commonly associated with the mainframe, such as batch jobs and online or interactive transactions, and the unique manner in which this work is processed ...

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