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Subject: RE: [legalxml-courtfiling] Globally unique identifiers - approach
From: "Cabral, James E." <>
To: "Cusick, James" <>,<>
Date: Wed, 11 May 2005 17:53:03 -0700
James,
That approach seems appropriate for identifying things that
occur at a specific time, e.g. Filing Identifiers, but do we need a
timestamp for things that do not change often (e.g. FilingAssembly or
FilingReview ID)?
jim
From: Cusick, James
[mailto:]
Sent: Wednesday, May 11, 2005
12:41 PM
To:
Cc:
John Greacen
Subject: [legalxml-courtfiling] Globally unique
identifiers - approach
John
and all,
At the
New Orleans meeting I agreed to propose an approach to generating globally
unique identifiers. After searching around on this topic I would like to
recommend using UUIDs as per the IETF DRAFT RFC. This approach requires NO
global coordination.
Please
see:
http://www.ietf.org/internet-drafts/draft-mealling-uuid-urn-05.txt
This
RFC is currently in draft status and is based on Unique ID generation
technique used in Open Software Foundation's Distributed Computing
Environment. The RFC guarantees that ID's generated using the
recommended algorithms will be unique across
space and time.
This
RFC specifies 4 algorithms to generate universally unique ID's. The
following subset is recommended for LegalXML
standards:
1. System timestamp up to a 100 nanoseconds
2. MAC address of the machine where UUID is generated
3. Use of Random or pseudo random numbers
Finally, the RFC contains C code sample on how to generate UUID's based
on the generation algorithms listed above.
Please
let me know what you think and how you would like to see this phrased within
Blue.
Regards,
james
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