Updating records in a VSAM file

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

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Table 1. **Statements to update records in a VSAM file**
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`