Modeling Many-to-Many with EOModeler
Modeling Many-to-Many with EOModeler
- Subject: Modeling Many-to-Many with EOModeler
- From: Rams <email@hidden>
- Date: Wed, 11 Aug 2004 03:30:24 -0400
I hope this isn't a terribly stupid question, but I'm staring at
EOModeler stumped. Consider a Many to Many relationship between a
Student and Teacher entity. Each student has multiple teachers, each
teacher has multiple students. Easy enough, just select 'Join in
Many-to-Many' from the Property menu and you're done. So great, I have
related students for each teacher entity, and teachers for each student
entity, but how do I associate other attributes into that model? Take
grades for example. Each student has exactly one final grade from each
teacher. How do I make that association?
To further complicate things, what do I do if I only want Teacher
entities instead? In other words, each teacher entity has been graded
by some number of other teachers? Any advice would be greatly
appreciated.
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