Suppression Default

which suppression standard for adabas Windows?

which suppression standard for adabas mainframe?

or recommended…

As always … it depends.

Usually fields will be defined as NU, unless the field will be used as a descriptor (or be part of a super-descriptor) and null values are relevant.


What exactly do you mean with suppression standard?
Do you want to know how the field is compressed if you don’t specify an option describing the compression (NU, NC, FI, NB)?
Then the answer is:

  • Null values (0 or blank) are compressed to 1 byte (0x01).
  • Other values are compressed and preceded with a length byte.