Question about Core Data Inverse Relationships

Hello

I am stuck on a problem that I just can't figure out.  I am very new  
to Core Data so it might just be that I am going about this wrong. I  
want to setup a model for something like this:


The currentAttributes and oldAttributes relationships in User are  
configured as "to-many relationships." My problem is in figuring out  
how to set an inverse relationship in the Attribute class. It seems  
like I cannot have an inverse relationship that points back to User  
for all Attribute entities in this case. (At least I can't figure out  
how to do it in Xcode.)

The purpose for this model is to allow me to track a set of attributes  
associated with a user and to keep track of any changes in the  
attribute values over time. A change is defined as replacing the value  
associated with the attribute or deleting an attribute. I am open to  
other suggestions on how to achieve this goal using Core Data.

Thanks

-- Bennett

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