InfoPath Dev

I am having two contact selectors in my infopath form. I need to validate both contact selectors that two contact selector should not contain same name. Can i know how i can do this validation? Thank you

1. My infopath form template's repeating table contains 4 columns and user can add as many as rows he want. Now whenever i submit this form its repeating table all rows are saved in single row of document library. Is there any chance i save each row of repeating table to each row of document library after submit? 2. Using ...