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Re: What's the use of the Z_UUID in the Z_METADATA table?
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Re: What's the use of the Z_UUID in the Z_METADATA table?


  • Subject: Re: What's the use of the Z_UUID in the Z_METADATA table?
  • From: "Shawn Erickson" <email@hidden>
  • Date: Tue, 12 Aug 2008 14:41:06 -0700

On Tue, Aug 12, 2008 at 1:17 PM, Gustavo Vera <email@hidden> wrote:
> What's the use of the Z_UUID in the Z_METADATA table?

Likely a UUID ("Universally Unique Identifier").

> Is some kind of check sum or something like that?

Not likely.

> CoreData uses this value for something?

Likely.

> Why is this value different every time the DB is regenerated?

Different instance of the database so different unique id, as a guess.

> Is the generation of it a random-based one? Or is it based on
> random+"another thing"?

man uuid

-Shawn
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References: 
 >What's the use of the Z_UUID in the Z_METADATA table? (From: "Gustavo Vera" <email@hidden>)

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