How to share an entity between two different core data models

Question

I'm wondering how to share an entity between two different core data models?

For example, I have a "Universe" model which describes a "WorldData" with its "CountryData". And in another hand, I have a "Population" model which describes a "HumanData" with its "CountryData".

I definitely want to keep my models separated.

Thanks in advance.

Please [don't use signatures or taglines](http://stackoverflow.com/faq#signatures) in your posts. — user229044, Dec 23 '10 at 15:56

score 0 · Answer 1 · answered Dec 23 '10 at 16:36

0

Have you checked the Core Data Guide? Managing relationships between entities is pretty basic.

If you want to manage a relationship between your Universe entities and your Population entities, you should describe them in the same model. Off the top of my head, I can't think of any benefits of putting two related entities in different Core Data Models.

answered Dec 23 '10 at 16:36

kubi

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I know, that's what I've done but now I'm asked to splited the two main functionalities (Universe and Population) so I can produce an independent library corresponding to only one model. That's ok if you consider only the library but I want to reuse this analysis for my own project which include the two models. I want to access to the entity of a model 2 in a model 1 without redefining it... – croustibapt Dec 23 '10 at 16:44
I found that : http://stackoverflow.com/questions/1554623/illegal-attempt-to-establish-a-relationship-xyz-between-objects-in-different-co – croustibapt Dec 24 '10 at 09:53

How to share an entity between two different core data models

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