[AccessD] Preventing childless parent records

Thanks to all for your replies.  I think I'll end up using some bits of
each of them in my solution to this problem.  My aim is to catch and
eliminate the error before the user moves off the record, rather than
upon close of the form.  I should be able to adapt your ideas to that
end.

Now if I could just penetrate that vacant smile . . . 

Regards,

Don