Domain Modelling tool advice - cross project relationships and inheritance?

This definitely needs small Proof-of-concept project because your requirements are not something that is commonly described in papers about EF.

Whilst it might sounds like the reverse of what you're asking for, I'd probably look at EF Code First. Because it's all built on top of POCOs, DbSets and a DbContext class, you'll be able to get the inheritance working pretty easily.

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.