Validation Question

I'm creating a simple Oracle 6i form which consists of one block consisting of a three field scrolling area.

I want to be able to validate the entered data to check for duplicate values before I commit the data. I can check for duplicates if they exist in the database but I can't figure out how to validate new entries that aren't in the database already and are duplicates.

Any suggestions on how I can accomplish this?

Thank you very much. Received on Sun Oct 16 2005 - 21:13:43 CDT