Re: defaulting units for measurements

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From: Garry Petrie (gp_at_europa.com)
Date: Tue Feb 13 2001 - 06:25:27 CET 

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Date: Mon, 12 Feb 2001 21:25:27 -0800
From: Garry Petrie <gp_at_europa.com>
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Subject: Re: defaulting units for measurements
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Richard Knapp wrote:

>> Garry Petrie wrote:
>
>>> Sounding a little like keys into a table in a database, very good conclusion. A stations's
>>> key would only exist for that particular version of a CaveXML file. Changing the data
>>> after reading it and then re-writing it would of course generate a new and probably
>>> different set of station keys.
>
> Would it be better to generate keys for each station or each survey? I'm thinking specifically of the
> way Survex handles data. If the key to each station was changed each time the data was saved,
> would this change the way the links between surveys would have to be handled?

There is a single station id, which all aliased or equated stations are replaced with.
This is done in the background, the shot with the aliased or equated station would be an
index to a third table, containing all equated stations and their lookup to the master
station ids.

Garry Petrie

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