cobol
DELETEステートメント

備考

主キーフィールドのキーを削除してレコードを削除する

   identification division.
   program-id. deleting.

   environment division.
   configuration section.

   input-output section.
   file-control.
       select optional indexed-file
       assign to "indexed-file.dat"
       status is indexing-status
       organization is indexed
       access mode is dynamic
       record key is keyfield
       alternate record key is altkey with duplicates
       .

   ...

   procedure division.

   move "abcdef" to keyfield

   *> Delete a record by index
   delete indexed-file record
      invalid key
          display "No delete of " keyfield end-display
      not invalid key
          display "Record " keyfield " removed" end-display
   end-delete

   perform check-delete-status

   ...