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What are three major types of JCL statements? What are their
functions?
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JOB - indicates start of jobstream to the operating system
and through parms coded on it, certain details about the
job (time, region, message level, job accounting data).
EXEC ? indicates the start of execution of a particular job
step, be that step a program or a proc.
DD - is a data definition, which is used to describe the
attributes of a data set (name, unit, type, space,
disposition).
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