>In my database designer I'm assigning relationships between all the primaries keys in my tables, that then I drag onto the forms I'll be using. My boss, who knows some VFP says they are not truly reliable and that it's better to create your own as you go. What do you guys think?

I don't believe there is any difference in reliability at all. I don't use them at all and choose to code them as necessary in each form for a couple of reasons. One, it's just a personal preference, seeing the SET RELATION TO ....., that I like better for debugging and the like. Secondly, the bulk of any relationships I create are based on concatenated keys and find this easier in code.