Core Data Epic Introduction

http://cocoadevcentral.com/articles/000086.php



Fetch data using one line:

[[self managedObjectContext] fetchObjectsForEntityName:@"Employee" withPredicate:
    @"(lastName LIKE[c] 'Worsley') AND (salary > %@)", minimumSalary];
Via: http://cocoawithlove.com/2008/03/core-data-one-line-fetch.html

one to many relationship
http://lethain.com/one-to-many-relationships-in-coredata/

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