If I have class 'A' which implements interface 'X', 'Y' and 'Z' and all of the interfaces are mapped in hibernate. What will happen when an instance of 'A' is stored, will all three of the tables mapped to the interfaces be updated?

If I query an interface, i.e. "from X", what class will be returned?

Also, I'm assuming "from A" it would return instances of class 'A' with data for all three interfaces.

Are these assumptions correct?