[OHM] temporal data in the OHM sandbox

[Lester Caine]

Mikel Maron wrote:
> Without thinking about it much, there's a few options
>
> * associate 1 or mode nodes centered on the building via a relation. tag each
> node with use and time span.
> * time namespacing, ala language localization
> http://wiki.openstreetmap.org/wiki/Comparison_of_life_cycle_concepts#Related_concepts

This seems to be total overkill in most cases?
We have start and end date which is the obvious way to manage changes and is 
consistent, so there is no need to be trawling through other tags to find 
possible date information?
What makes more sense to me is a mechanism to create the 'history' of changes in 
the same format as will be created in the change log as changes are made in the 
future.

I've argued for some time that simply adding 'start_date' to much of the content 
that is currently existing will add an important element of historic data to 
what is already live.

-- 
Lester Caine - G8HFL
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