VSAM - Updating records in a VSAM file

Updating records in a VSAM file

Enterprise COBOL for z/OS, Version 4.2, Programming Guide

To update a VSAM file, use these PROCEDURE DIVISION statements.

Access method	ESDS	KSDS	RRDS
ACCESS IS SEQUENTIAL	OPEN EXTEND WRITE CLOSE or OPEN I-O READ REWRITE CLOSE	OPEN EXTEND WRITE CLOSE or OPEN I-O READ REWRITE DELETE CLOSE	OPEN EXTEND WRITE CLOSE or OPEN I-O READ REWRITE DELETE CLOSE
ACCESS IS RANDOM	Not applicable	OPEN I-O READ WRITE REWRITE DELETE CLOSE	OPEN I-O READ WRITE REWRITE DELETE CLOSE
ACCESS IS DYNAMIC (sequential processing)	Not applicable	OPEN I-O READ NEXT WRITE REWRITE START DELETE CLOSE	OPEN I-O READ NEXT WRITE REWRITE START DELETE CLOSE
ACCESS IS DYNAMIC (random processing)	Not applicable	OPEN I-O READ WRITE REWRITE DELETE CLOSE	OPEN I-O READ WRITE REWRITE DELETE CLOSE