On Sun, Dec 21, 2008 at 02:46:07PM +0000, Dave Stubbs wrote: > > Same goes for trying to encode hierarchy into keys and values really. > > It's quite cumbersome. We're using XML, it's good for structuring data > > (eye of the beholder thing there), and instead of trying to encode > > structure in values that's where it should be. Of course, my complete > > overhaul of OpenStreetMap tools/API to do all this is just around the > > corner too. I jest. > > > > Well XML is just the transport format. > The actual database is stored in a relational database, and they > really aren't very good at hierarchies at all.
Maybe a relational database isn’t the best place for storing properties about nodes/ways/relations. OpenStreetMap has a namespace and an API that presents a unique URI for every object (AFAICT) which is enough to base an RDF model on. > Anyway, if you want hierarchies you can always use relations :-) Heh, there’s the RDF model ☺ Simon -- A complex system that works is invariably found to have evolved from a simple system that works.—John Gall
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