science官方网站购买:VSAM -SAMPLE - RRDS - START

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INPUT-OUTPUT SECTION.                     
FILE-CONTROL.                             
    SELECT EMP-FILE ASSIGN TO EMPFIL      
      ORGANIZATION   IS RELATIVE          
      ACCESS MODE    IS DYNAMIC           
      RELATIVE KEY   IS RN1               
      FILE STATUS    IS WS-EMPFIL-STATUS.  01 WS-WORK-AREA.
      05 RN1                  PIC 9(3). 
PROCEDURE DIVISION. OPEN I-O   EMP-FILE.                                  // INPUT or I-OMOVE 2 TO RN1                                           // Need move to relative key
START EMP-FILE  KEY  >= RN1                // can't code like START EMP-FILE KEY>=2
READ EMP-FILE                   
REWRITE  EMP-FILE-REC           
IF C-EMPFIL-OK                  
DISPLAY EMP-FILE-REC            
END-IF                           
                                
CLOSE EMP-FILE.