Example for Changing Data Set Physical Options

For this example, the original DASDL description looks as follows: 

D DATA SET
 (
  A ALPHA(10);
  B BOOLEAN;
  N NUMBER(S5,2);
  R REAL;
 )
  VERIFY R GEQ 0;
 S SET OF D
   KEY A;
 D
  (
   AREAS = 10,
   AREASIZE = 100 BLOCKS,
   BLOCKSIZE = 5 RECORDS,
   CHECKSUM = FALSE
  );

To change the data set physical options, perform the following steps:

  1. Alter the DASDL statements to the following. The asterisks (*) indicate changed lines. 

    *   UPDATE;
    D DATA SET
     (
      A ALPHA(10);
      B BOOLEAN;
*     N NUMBER(S5,2) REQUIRED;
      R REAL;
     )
*     VERIFY B OR R GEQ 0;
      S SET OF D
        KEY A;
      D
       (
        AREAS = 10,
*       AREASIZE = 50 BLOCKS,
*       BLOCKSIZE = 20 RECORDS,
*       CHECKSUM = TRUE,
*       EXTENDED = TRUE,
*       SECTIONS = 3
       );

  2. Compile the DASDL description.

  3. Generate and run the Reorganization program.

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