[Data-modeling] Historical currency

[Christopher R. Maden]

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/ >