Re: Genealogical evidence and data model

On Fri, 01 Feb 2008 16:24:12 -0500, Haines Brown
<brownh@[EMAIL PROTECTED]
> declaimed the following in
soc.genealogy.computing:

> 
> A "relation****p event" seems to conflate the categories. An "event" (in
> the sciences, anyway) refers to a change of state. Yet the child-mother
> relation is the _result_ of a birth event, but in itself does not refer
> to a change of state. Also, who are the principles in the case of a
> person's death? To presume that the death was witnessed seems
> unwarranted.
>
	I'm an old Ultimate Family Tree user, where the data entries were
called "events", and the parents were roles in the birth event (three
common roles: child [the person whose birth is recorded in the event],
father, mother.. Could also add midwives, doctor, etc.)

	TMG do***entation refers to the data entry as a "tag"... So birth is
a tag, relation****p is a tag, death is a tag...

	While TMG "tags" have slots for two principles, and then a list of
witnesses (vs UFT's single list of roles), the second principle does not
need to be filled in.

	Two principles come in useful for things like land sales, as you can
specify the buyer and seller, and create a sentence template that uses
both.


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	Wulfraed	Dennis Lee Bieber		KD6MOG
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