Core Data : where are the docs ?
Core Data : where are the docs ?
- Subject: Core Data : where are the docs ?
- From: Eric Morand <email@hidden>
- Date: Sun, 4 Sep 2005 00:02:45 +0200
Hi to all !
With a lot of late, I'm beginning to explore the fantastic world of
Core Data. And, to say the least, I'm totaly lost !
The docs look very weak to me : I've read entirely the Core Data
programming guide (very clear) and the Data Modeling Guide but still
I can't find how to make evrything work.
I have created a Managed Object Model, using Xcode. I have a
nice .xcdatamodel file, populated with me entities, relationships,
and so on...and I don't know what to do with it !
I'm pretty sure I've missed a critical documentation that explains
what to do with this file, how to associate it with a
NSManagedObjectModel instance of my app.
Worse, I don't know how to fetch from the NSManagedObjectContext
since it is only accessible from my app delegate and not from my
other window controllers (I have a lot of them) ! Should I add a
reference to it on every controller I had to my app ? I sure hope no...
Well, as you see, I'm missing one or two critical informations to
fully understand Core Data...and I don't know where to find them.
If someone could link me to the docs I've missed and that explain all
of this, that would be great !
Ih, and last question (once more, I've not found anything about it in
the docs I've read) : what are the differences between the persistent
storage types (SQL, XML...) and which one should I use in which case ?
Thanks by advance,
Eric.
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