March 2007
Beginner
526 pages
13h 53m
English
book
Introduction to the New Mainframe: z/VSE Basics
by Wolfgang Bosch, Hans Joachim Ebert, Helmut Hellner, G. M. (Jerry) Johnston, Wilhelm Mild, Ingolf Salm, Joerg Schmidbauer, Martin Walbruehl, Mike Ebbers
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228 Introduction to the New Mainframe: z/VSE Basics
9.5 HLL relationship between JCL and program files
In the previous section we learned how to isolate a COBOL program from
changes in data set name and data set location. The technique of referring to
physical files by a symbolic file name is not restricted to COBOL. It is used by all
HLLs and even in Assembler language. Example 9-5 shows a generic HLL
example of a program that references data sets through symbolic file names.
Example 9-5 HLL relationship between JCL and program files
// JOB MYJOB
// STEP1 COMPILE AND LINK
// EXEC IGYCRCTL
...
OPEN FILE=INPUT1
OPEN FILE=OUTPUT1
READ FILE=INPUT1
... ...
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