Im new to hibernate.

I've been storing my relationships in a single direction.

e.g.

Users 1->many Addresses

So Users has a set of addresses stored in the users object.
However addresses has no stored relationship in its object with the user.

I always thought it would never be a problem but now that im starting to develop database intensive conditions, it feels like my job would be easier also storing the relationship inside of the addresses object.. Is this the norm to do so? Or is it like unneccessary spam in the db?