Re: IS-A relationships in core data
Re: IS-A relationships in core data
- Subject: Re: IS-A relationships in core data
- From: mmalc crawford <email@hidden>
- Date: Fri, 16 Nov 2007 08:01:34 -0800
On Nov 15, 2007, at 10:23 PM, Daniel Child wrote:
how do you handle IS-A relationships in Core Data.
[...]
Lets say I have a MasterList created from three separate lists,
ListA, ListB, and ListC. Let's say that the MasterList has certain
properties (last name, first name) in common that will also be found
in data from the individual lists. However, the structure of the
three individual lists may otherwise be different.
It's not clear what you mean. You seem to be describing a has-a
relationship.
If you want to define an inheritance hierarchy, use inheritance:
<http://developer.apple.com/documentation/Cocoa/Conceptual/CoreData/Articles/cdMOM.html
>
mmalc
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