As much as I dislike nullable fields, I personally think that the alternative to having them (Making any nullable instead a table) can make working with it too

As much as I dislike nullable fields, I personally think that the alternative to having them (Making any nullable instead a table) can make working with it too cumbersome. > Or just have a single nullable fk to a table where the data's not nullable. Why not the other table having a non-nullable pk/fk to the main table?