[odc-discuss] ODbL /BY-SA

[Rufus Pollock]

On 26 July 2010 22:30, Rob Myers <rob at robmyers.org> wrote:
> Hello to the list.

[...]


> If so, how does clause 4.6 of the ODbL ("If You Publicly Use a Derivative
> Database or a Produced Work from a Derivative Database, You must also...")
> not clash with BY-SA 3.0 Generic 8e ("This License constitutes the entire
> agreement...") for downstream users of the Produced Work?
>
> If not why not? :-)

I have to say I think Jordan has given a rather confusing explanation
here ;) I think things are even simpler (Jordan: please correct if i
am wrong ...):

First, I should point this clause abut "You Publicly Use a Produced
Work from a Derivative DB" is sort of Affero like:

it is intended to stop people using a derivative DB to make "produced
works" (e.g. map images) for some useful public service but not making
that derivative DB publicly available. It is expressly *not* about
restricting what other people can do with the produced work.

Example:

The Database = OSM Planet + some other data of your own
Produced Work = Rendered Tile (i.e. 2-d map image)

If *You* (creator of produced work) make the map available online you
must also make the derivative DB you made it with available. However,
you are not required to impose any kind of licensing condition on the
produced work (that's up to *You*) and downstream users of the
produced work (not *You*) are bound by that license not the ODbL.

So, for example, a rendered map from OSM could be incorporated into
wikipedia (or anywhere else for that matter) without any problem -- or
any need to even think about the ODbL -- as the ODbL does not impose
any restrictions on the Produced Work. (Assuming of course that the
rendered map has been licensed appropriately by its creator -- but
that choice of license is not affected by the ODbL ...)

Example 2:

The DB: Bibliographic Catalogue
Produced Work: graphic visualization of all titles of books published
in 1890 (e.g. wordle ...)

Ditto. You (creator of produced work) are required to make derivative
DB used to create produced work available (if you publicly use the
produced work) but You may license the produced work however you wish.

Regards,

Rufus