title: has_many and has_one, any advantages/disadvantages?
body: <p>This is just a general question. Lets assume that I have the following situation: I have a Patient (many) and a Doctor (few) model. I want each patient to be related to one doctor. I can do it now two ways, either doctor has_many patients or the patient has_one doctor. Does using the one or another has any dis-/advantages or is it completely irrelevant which one I use?</p>