Progress
Database Design
Guide


CHECK Constraint

The CHECK constraint is the most flexible constraint. You specify a search condition that can test for a range of values, a minimum or maximum value or a list of values. The CHECK constraint refers to columns in the specified table only and cannot contain queries or aggregate functions.


Copyright © 2004 Progress Software Corporation
www.progress.com
Voice: (781) 280-4000
Fax: (781) 280-4095