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ABCs of IBM z/OS System Programming Volume 1 by Stanley Jon, Luiz Fadel, Lydia Parziale

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The z/OS system programmer
In a mainframe IT installation, system programmers are responsible for installing, customizing, and maintaining the z/OS operating system (OS). Their responsibilities also include installing or upgrading all additional products that run on the system, including middleware products. Middleware is a software layer between the OS and the user, or user application. Middleware supplies major functions that are not provided by the operating system.
This chapter covers the following topics:

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