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Re: CoreData, SQLite and GUID

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Re: CoreData, SQLite and GUID

Subject: Re: CoreData, SQLite and GUID
From: Thomas Engelmeier <email@hidden>
Date: Mon, 1 Sep 2008 22:51:05 +0200


Am 27.08.2008 um 11:30 schrieb Amy Heavey:

I've looked at the database structure, and it looks fairly easy to add the data, and I can do it via PHP, my problem is that each table has a ZGUID column. This doesn't hold any user entered data, it looks like it is either generated by CoreData, or the cocoa application.

Can anyone shed any light on the function of the GUID column in a coredata sqlite file? If I can correctly insert this column I can insert all of the other data.

Based on some reverse engineering of another CoreData based application I'd consider ZGUID an implementation detail of CoreData. It's purpose seems to be an unique key for joins. I'd stay away from manipulating it directly.

Regards,
	Tom_E
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