It's to a database. But this is not totally necessary. I really only used DataAssist so that it would show what the file description is - ie the file is sheetmusic so i wanted to put a description of what it's about. If there is another way to do this without using DataAssist, then i'd be happy to hear! Although the uploading and making it as a link has to be done via the server and not hand coded onto the webpage as this is for a client who won't be accessing the web pages.
Thanks for your help,