[OSM-legal-talk] Fwd: [OSM-dev] license change effect on un-tagged nodes

[Dave F.]

On 07/07/2011 07:41, Anthony wrote:
> Thanks Toby.  I'm forwarding this to Dave Fox, who is the one who
> actually asked the question.

> It follows pretty naturally out of the database schema. Anything that
> modifies the ways, way_tags or way_nodes tables creates a new version
> of the way. Things that only affect the node tables such as moving the
> location of a node or changing tags on the node do not affect any of
> the way tables so no new version is created.
>
> The same thing happens with relations and their members. You can add a
> maxspeed= tag to a way and it doesn't affect the relation that way is
> a part of. That would actually make touching long route relations a
> conflict nightmare so I'm pretty glad this isn't the case.

Thanks to Anthony for asking & Toby for responding.

However that just explains what happens but not why.

I suggest that, to most users, if a node within a way is moved then that 
way is considered to have been modified & should be recorded as such.

Dave F.