To modify information in the schema holder at the table level:
1. Access the Data Dictionary.
2. Select a table from the Tables list; for example, the customer table.
3. Choose the Table Properties button.
The following dialog box appears:
4. Choose Validation. The Table Validation dialog box appears. You can change either the validation expression or the message by typing new text in the fields.
5. Choose OK to return to the Table Properties dialog box.
6. Choose OK to return to the Data Dictionary main window.
