Re: UUIDs (Was: Software implementing Gentech Genealogical Data Model)

singhals wrote:
HYPOTHETICALLY -- a pre-selected code could be inserted for each piece of missing information (say "32 Feb" as the date if only the year is known, or "Tatooine City, Rigel" if only the country is known). Then, if/when the precise date or place is discovered, it can be entered, and the UUID will re-generate.

BUT, if you compare the _source_data_, then you can say
"twelve data elements match, one differs, two are only
in A, one is only in B"

Comparing an identifier hashed from the SAME two sets
of data, all you can say is that they differ. Which means
exactly the same thing as when PGV UIDs differ, i.e.,
neither is a copy of the other.

--
Wes Groleau

Race Doesn't Matter
http://Ideas.Lang-Learn.us/WWW?itemid=876
.

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