How to store one entity class in another in specific relation between tables?

LINQ-to-SQL requires a primary key in order for it to materialize entities. And since neither Books nor Authors entities know anything about each other, I think your only option is to add a PK to BookAuthors as Pleun mentioned.

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.