Unique items in Core Data models
Unique items in Core Data models
- Subject: Unique items in Core Data models
- From: Keith Penrod <email@hidden>
- Date: Mon, 14 May 2007 19:38:33 -0600
Is there a way to set it up so that one of the attributes for an
Entity is a sort of identifier--that is, every Book has a title and
only one book can exist for any given title--kind of like a
NSDictionary? So, if the user tries to create a new item and name it
the same title it will either ignore the request, combine the info
for the two books, or raise an error message.
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