中财网ps存储jpg如何存储圆形:VSAM - SAMPLE- KSDS-SEQUENTIAL REWRITE & DELETE
来源：百度文库 编辑：中财网 时间：2024/04/29 15:59:11
FILE-CONTROL.
SELECT EMP-FILE ASSIGN TO EMPFIL
ORGANIZATION IS INDEXED
ACCESS MODE IS DYNAMIC
RECORD KEY IS EMP-NO
FILE STATUS IS WS-EMPFIL-STATUS.
DATA DIVISION. PROCEDURE DIVISION.
OPEN I-O EMP-FILE. * * REWRITE FIRST 1 RECORD*
READ EMP-FILE NEXT RECORD -> NEXT RECORD can't not be ignored
MOVE 'NAME BBBB' TO EMP-NAME
REWRITE EMP-FILE-REC * * DELETE THE SECOND RECORD* READ EMP-FILE NEXT RECORD -> NEXT RECORD can't not be ignored
DELETE EMP-FILE*CLOSE EMP-FILE. 1. Note read first and then rewrite
SELECT EMP-FILE ASSIGN TO EMPFIL
ORGANIZATION IS INDEXED
ACCESS MODE IS DYNAMIC
RECORD KEY IS EMP-NO
FILE STATUS IS WS-EMPFIL-STATUS.
DATA DIVISION. PROCEDURE DIVISION.
OPEN I-O EMP-FILE. * * REWRITE FIRST 1 RECORD*
READ EMP-FILE NEXT RECORD -> NEXT RECORD can't not be ignored
MOVE 'NAME BBBB' TO EMP-NAME
REWRITE EMP-FILE-REC * * DELETE THE SECOND RECORD* READ EMP-FILE NEXT RECORD -> NEXT RECORD can't not be ignored
DELETE EMP-FILE*CLOSE EMP-FILE. 1. Note read first and then rewrite
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