Relationships are defined in the back end database because that is where
they will be enforced. You may not even see these relationships in the fe.
Don't worry. Jet will still enforce RI no matter what product is used to
access the back end. So it may be ASP, VB.NET, C#.Net, Word, Excel, Access,
or whatever. It doesn't matter! That is why RI is ONLY defined in the be.