[Data-modeling] Historical currency

[Ed Laurent]

How about adding the Time span properties of Start and End date so that any
currency can be tagged with it's historical period? Ideally this date
feature would be linked to country. For example, several countries use the
US$ but over different time spans than the US. The other currency properties
of exchange rate, currency code, etc. are all the same.

-Ed


On Mon, Mar 31, 2008 at 6:54 PM, Christopher R. Maden <crism at metaweb.com>
wrote:

> Klaus (/user/kseistrup on Freebase) caught an interesting condition: the
> mention of the Zambian pound as a currency of Zambia, which hasn't been
> true for some time.
>
> I would propose two new properties:
>
> Country should have a "Historical currency" property which expects
> Currency.
>
> Currency should have a "Countries formerly used" property which is its
> reciprocal.
>
> This would allow obsolete currency, like the Zambian pound and the
> Confederate dollar, to be modeled, and formerly widespread currency like
> the British pound to be modeled both as current currency and historical
> currency.
>
> Thoughts?
>
> ~Chris
> --
> Christopher R. Maden
> Data Architect
> Metaweb Technologies, Inc.
> <URL: http://www.metaweb.com/ >
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