# Suppression Default

**URL:** <https://techcommunity.softwareag.com/t/suppression-default/170764>\
**Category:** Forum\
**Tags:** Adabas-Natural, Adabas, Adabas-Basics-on-Linux-Unix-Windows, Adabas-on-Windows-UNIX, Adabas-on-Linux\
**Created:** [April 20, 2013, 11:49pm UTC](https://techcommunity.softwareag.com/t/suppression-default/170764 "2013-04-20T23:49:26Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Claudio\_Muller](https://sea1.discourse-cdn.com/techcommunity/user_avatar/techcommunity.softwareag.com/claudio_muller/32/518_2.png) [@Claudio\_Muller](https://techcommunity.softwareag.com/u/Claudio_Muller)\
**Post date:** [April 20, 2013, 11:49pm UTC](https://techcommunity.softwareag.com/t/suppression-default/170764/1 "2013-04-20T23:49:26Z")

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Hi,  
which suppression standard for adabas Windows?

which suppression standard for adabas mainframe?

or recommended…

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<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/techcommunity/original/3X/c/d/cd19967bb605d28a72d77eb83a1cae22f3df2eb8.svg) [@system](https://techcommunity.softwareag.com/u/system)\
**Post date:** [April 21, 2013, 10:38pm UTC](https://techcommunity.softwareag.com/t/suppression-default/170764/2 "2013-04-21T22:38:18Z")

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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.

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<div class="post-metadata">

**Author:** ![Claudio\_Muller](https://sea1.discourse-cdn.com/techcommunity/user_avatar/techcommunity.softwareag.com/claudio_muller/32/518_2.png) [@Claudio\_Muller](https://techcommunity.softwareag.com/u/Claudio_Muller)\
**Post date:** [April 21, 2013, 11:17pm UTC](https://techcommunity.softwareag.com/t/suppression-default/170764/3 "2013-04-21T23:17:44Z")

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Thanks.

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<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/techcommunity/original/3X/c/d/cd19967bb605d28a72d77eb83a1cae22f3df2eb8.svg) [@system](https://techcommunity.softwareag.com/u/system)\
**Post date:** [April 22, 2013, 11:19am UTC](https://techcommunity.softwareag.com/t/suppression-default/170764/4 "2013-04-22T11:19:38Z")

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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.

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<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/techcommunity/original/3X/c/d/cd19967bb605d28a72d77eb83a1cae22f3df2eb8.svg) [@system](https://techcommunity.softwareag.com/u/system)\
**Post date:** [April 2, 2021, 3:28pm UTC](https://techcommunity.softwareag.com/t/suppression-default/170764/5 "2021-04-02T15:28:39Z")

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