How do I add additional Attributes to a Core Data Entity?
How do I add additional Attributes to a Core Data Entity?
- Subject: How do I add additional Attributes to a Core Data Entity?
- From: Andrew Sage <email@hidden>
- Date: Thu, 21 Jul 2005 17:00:35 +0100
I have a set of Core Data Entities which each have several Attributes.
This Data Model has been used for the first version of my software
and I now
have a large amount of data built around it.
The problem is that I tried to add an additional Attribute to one of
the Entities and it
messed everything up. Due to the Attribute's being order by name in
the Entity in the Data Model
it appears that my new Attribute has gone into the middle and values
loaded from file are
now ending up in the wrong Attributes.
Is this meant to happen? Is there any way around this or is there
some kind of
versioning that can be used to migrate data from the old model to the
new one?
Thank you.
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