Simple rental database design with datamapper?

Your current datamodel is going to have one major flaw - that is, books must all be returned at the same time (well, not really, but is a Loan 'returned_at' when the first book comes back, or at the last one?).

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.