Do we put associative entity sign(diamond within the square ) to every M:M relationship?
- Anonymous9 years agoFavorite Answer
Yes. Well... sort of. You need some way of indicating the relationship between two entities, while also conveying the nature of the relationship (1:M, M:M, M:1). So if the associative entity sign is the way you indicate a M:M relationship, then yes, you do put it.Source(s): B.C.Sc.