nilolima wrote:Eu não entendi muito bem a resposta, a documentação aconselha a não usar relacionamentos n:m? Ou não usar atributos de relacionamento?

Mesmo assim obrigado pela resposta.

Don't use exotic association mappings.
Good usecases for a real many-to-many associations are rare. Most of the time you need additional information
stored in the "link table". In this case, it is much better to use two one-to-many associations to an intermediate
link class. In fact, we think that most associations are one-to-many and many-to-one, you should
be careful when using any other association style and ask yourself if it is really neccessary.