===== configure constraints =====

With this feature you can configure reuseable constraint definition.


**[[niota_grid_config_sitemap|navigate to the menu item]]**


  * add/edit a record -> enter valid values for fields listed below

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{{:niota-docs:m_03_020_constraint_01.png?nolink|}}
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=== Constraint ===
Unique ID for this constraint configuration entry. It is recommended to use human readable IDs. It is not recommended to use blanks and/or withspace characters in the ID. 

=== Description Constraint ===
Description for this constraint configuration entry within niota. 

=== Operand 1 ===
First operand value that is used in the constraint check.

=== Operand 2 ===
Second operand value that is optionally used in the constraint check.

=== Column Datatype ===
High level datatype of the operand 1/2 - values and of the column value that should be checked by this constraint.\\
See [[niota-docs:niota_constants|system constants]] for further details.


=== Operation ====
Logical predicate/operation by which the column value is compared to the operand value(s).\\
See [[niota-docs:niota_constants|system constants]] for further details.