[OSM-dev] Multiple layers in the database

[Gervase Markham]

Frederik Ramm wrote:
> Of course, millions of open questions remain, e.g. will there be
> features that can transcend layers, or links between them (e.g.
> feature X on layer A is the same as feature Y on layer B or so).

I think we should start by considering them, at a database level anyway, 
as independent.

> Not necessarily - one could also set up different layers on their very
> own infrastructure which may not even have to be in the same country
> as the original OSM server. Why stuff more and more through that
> single bottleneck when there's a good opportunity for scaling here?

Good point. We could set up an "import" test server to import big data 
things into, download from both into JOSM and do the merge client-side.

Gerv