Online Documentation for SQL Manager for InterBase/Firebird
Defining domain check
The Check tab allows you to set CHECK constraints, i.e. conditions that must be true for inserts and updates to the field, based on the current domain, e.g. VALUE>=10. The CHECK constraint cannot reference any domain or column.
For your convenience the syntax highlight, code folding and a number of other features for efficient SQL editing are implemented. For details see Working with query and Using the context menu.
The check definition can be loaded from, and saved to, a file with the help of the appropriate items of the Check group of the Navigation bar.
See Checks for details.