Customer Information Control System Command Level Programming

This text aims to teach the reader how to design, code and test CICS applications in both the mainframe and the OS/2 environments. It provides the tools and techniques in step-by-step format, as well as the concepts behind those techniques. It explains how CICS relates to the hardware, the operating system, the data and the applications. The book includes hands-on exercises and sample programs that readers can use as a basis for creating new applications. The author explains how terminal devices work, how they are connected to CICS, and how to use them in an application. The vital topics of VSAM and SQL are covered in depth, as are communications between program modules and between CICS regions and systems. New material includes CICS OS/2 and associated tools and techniques, CUA (Common User Access) and SQL, as well as the new mainframe releasers CICS/MUS 2.1.1 and CICS/ESA 3.1.