grails hasOne vs direct member variable

Question

Let\'s say I have a grails domain class that looks like

class Person {
    Address address
}

I could also declare it as

class P         


        

Answer 1

If the foreign key exists on the address table, then that address can only have one person. If the foreign key is on the person table, multiple persons can have the same address.

It's not about what way is better/worse. It's about what is the correct way to model your data.