Because software and not hardware is now the dominant cost in computing, users of mainframes will not trade them in for computers with modern design features incompatible with their software. This underlies the demand for the Job Control Language (JCL) program which provides the means of communication between an application, the operating system, and the hardware. In this fourth edition, JCL features that are no longer supported by IBM or are known to cause problems in distributed environments are separated out in a chapter on "obsolete technology" in legacy systems. Further updates for this edition include: changes in architecture, hardware, devices, and terminology; the addition of more tutorial aimed at readers coming from a PC background instead of a mainframe background; an explanation of JCL's role in batch programming and production jobs; new sections on programming in multi-platform systems and on operating system facilities; and examples that reflect concerns like Y2K and security.
- ISBN10 0471283096
- ISBN13 9780471283096
- Publish Date 5 May 1998 (first published 14 February 1991)
- Publish Status Out of Stock
- Out of Print 15 July 2002
- Publish Country US
- Imprint John Wiley & Sons Inc
- Edition 4th Revised edition
- Format Paperback
- Pages 480
- Language English