Thanks for an opinion Richard Typically, there isn't a need to insert several items into the same table at > once
How about shopping cart - most typical application ;) Actually I have applicants with lists of faculties and exams. Every list property of newly created object needs to be inserted, and I receive whole object from web UI. As for guarding from duplicates, I do it in my validation code, database constraint is there only as last resort - protection from bugs.
