Entity Framework on delete cascade

Question

I have problem with deleting related rows in Entity Framework 4.1. I have tables with relations

Book 1<--->* BookFormats

I have set the on delete cascade

Answer 1

I've tested it in EF 6.1.3 and this should work fine:

 var originalBook = m.db.Book.First(x => x.BookID == bookId);
 originalBook.BookFormats.Clear();
 db.Books.Remove(originalBook);
 m.db.SaveChanges();