On 29/06/11 19:56, Frederik Ramm wrote:
Hi,
James Livingston wrote:
If I use software that builds an in-memory data structure which you
believe to be a database in order to make a produced work, how
would you suggest that I fulfil my obligation to make such derived
database available on request?
I have absolutely no idea. It's one of the many things I don't know
about how the produced works part of the ODbL will work in practice.
Thinking about this more, the problem would only occur if you have a
black-box software wich might or might not create a database
internally, and the thing that falls out of the black box is a
produced work that you will publicly use.
Because then, and only then, will you have to share the derived
database upon which the produced work is based.
If, on the other hand, out of the black box comes a derived database,
then you can simply share *that* database and nobody cares what
happened in the black box, because you only have to share the last in
a chain of derived databases that leads to a produced work, right?
I think that's right - that's the only one which you're publicly using.
Really I'm at a loss to see the point of the share-alike clause (4.4). I
can't think of a use-case for OSM where processing the database doesn't
reduce the amount of information. When you want to render geodata, it
typically involves discarding most of the metadata, getting rid of
points from ways, and transforming lat/long to cartesian co-ordinates in
a projection. The resulting database is always going to have a lot less
information than the original, and be difficult or impossible to
translate back into OSM (without the OSM IDs or original lat/long). So
what's the point of the huge burden of being required to make it
available on request? Who benefits?
Jonathan.
--
Jonathan Harley : Managing Director : SpiffyMap Ltd
Email: m...@spiffymap.com Phone: 0845 313 8457 www.spiffymap.com
Post: The Venture Centre, Sir William Lyons Road, Coventry CV4 7EZ
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