问题
I have a one-to-many relationship store <---->> product, and I know the product, how can I find out who the parent of this product is? I can have many products with the same values, for example product1 has parent1 and another product with the same values as product1 has parent2 so i cant't search which parent contains product1?
回答1:
You should have noticed the core data model editor bugging you about the relationship not having an inverse relationship if you don't have one. If you do have one, it's as simple as using that key.
Hypothetically, store has a relationship products - so each product should have a relationship store.
来源：https://stackoverflow.com/questions/23923673/coredata-get-parent-of-child