How do you control the constraints in forms?

How do you control the constraints in forms?

This can be done by selecting the Use Constrain Property to ON.

You can suppress or customize error messages in Forms. This can be done by setting the message level of the system variable SYSTEM.MESSAGE_LEVEL. The other way to do this is by using the ON-ERROR / ON-MESSAGE triggers.
When will ON-VALIDATE-FIELD trigger executed?
ON-VALIDATE-FIELD triggers are used for field validation. It fires when the field validation status is New or changed.......
Difference between system.current_field and system.cursor_field
The only difference between these two is that System.current_field gives name of the field and System.cursor_field gives name of the field with block name..
What are dynamic reports? How will you create them?
Following steps should be followed to build a Dynamic Report: Create a temporary table first. Then insert data to the temporary table using the After Form Trigger...
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