Online Documentation for SQL Manager for InterBase/Firebird
Checks
The Checks tab is provided for managing table CHECK constraints. Double-click a check to open Constraints Editor for editing the check.
Right-click a check to display the context menu allowing you to create new, edit, rename, or drop the selected check. Using the menu you can also export the list of the table checks to any of supported formats.
Checks management tools are also available through the Navigation bar of Table Editor.
The Checks list provides the following attributes of each check constraint of the table:
Name
Source
For details see Checks.