Example Using SST Keyword

Figure 1. Data Description Specifications Using the SST Keyword
....+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
     A               LOGICAL FILE LF3 FOR SST KEYWORD EXAMPLES
     A
     A          R RECORD3                   PFILE(PF1)
     A
     A            YY                 I      SST(YEAR 2 2)
     A
     A          K YY

For the logical file described by Figure 1, COPY DDS generates the following specifications:

Figure 2. Using the SST Keyword
    *
     FD LF3 LABEL RECORDS ARE STANDARD.
     01  LOG-RECORD.
                 COPY DDS-ALL-FORMATS OF LF3.
         05  LF3-RECORD PIC X(2).
    *  I-O FORMAT:RECORD3    FROM FILE LF3         OF LIBRARY COPYDDS
    *
    *THE KEY DEFINITIONS FOR RECORD FORMAT  RECORD3
    *  NUMBER               NAME              RETRIEVAL    TYPE   ALTSEQ
    *   0001  YY                               ASCENDING     AN     NO
        05  RECORD3      REDEFINES LF3-RECORD.
            06 YY                   PIC X(2).

The COPY statement does not add a suffix to the field name YY because YY is neither a key that originates from the physical file nor an ILE COBOL reserved word.