Two The point is usually a default price so a nullable Verify defeats The purpose. Keith's response demonstrates that by initialising it while in the Ctor. If It really is for that dB I don't actually see Significantly change than having a default column worth and make it a non-null https://share.evernote.com/note/ea58f2d1-1fad-d2e9-a6ee-0cfba44aece4