Prevent duplicates when importing RSS feed to Core Data

Question

Trying to import a RSS feed into Core Data. Once they are imported, when trying to update the feed again afterwards, how do I most efficiently prevent duplicates. Right now

Answer 1

Can you modify your core data model ?

If you can I would add a "Hash" property to each feed entry to uniquely identify it. Then you could efficiently detect wether a specific entry is already in your database or not.