Core Data on iOS 5 Tutorial: How To Work with Relations and Predicates

This is a tutorial where you’ll learn how to work with predicates and relationships in Core Data. It is written by iOS Tutorial Team member Cesare Rocchi, a UX designer and developer specializing in web and mobile applications. Good news – by popular request, we now have a 4th part to our Core Data tutorial series! :] In the first part of the series, you learned how to visually build a data model

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Core Data Relationshipsを伴うPredicate設定

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CoreDataについてのチュートリアル. Relationships等かかなり詳しく書かれてる. NSPredicateについて