Job Language Control
JCL: Job Control Language
J ob C ontrol L anguage, usually called JCL , is a computer programming language used on computers great system for the treatments Batch S. It is used with operating systems such as MVS or GCOS.
It allows the comparison of the data (bases and/or file S) and of the program S, as well as the sequencing of the treatments.
In its first versions, each stage can test the code return of the preceding one, and an action being decided conditionally with the réultat.
Thereafter, of the catalogued procedures allows replacements of character strings in multiple places, giving him possibilities close to a language macro rudimentary.
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