You are tasked with writing a JCL job that appends records to an existing data set. Explain how you would use the DISP parameter to achieve this while preserving the existing data.
- DISP=(MOD,CATLG,CATLG)
- DISP=(MOD,KEEP,KEEP)
- DISP=(NEW,KEEP,KEEP)
- DISP=(OLD,KEEP,KEEP)
DISP=(MOD,CATLG,CATLG) allows the job to modify and catalog the existing data set, preserving its contents while appending new records.
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