A reader job is a spooled input job,
and a writer job is a spooled output job.
- Reader
- A reader job reads batch job streams from database files, and places
the jobs on a job queue. The reader job is part of input spooling and is an
IBM-supplied program.
- Writer
- A writer job writes records from printer output files (also called spooled
files) to a printer. The writer job is an IBM-supplied program, started in
the spooling subsystem where it selects files from the output queue to be
printed.