None, that's why a new W3C version could read a changed structure just like file parsers do.
There are standard definitions like "core Vocabulary", but that also mainly describes what "minimal set of properties" should be present. On Mon, Jan 5, 2015 at 6:17 PM, Bertrand Delacretaz <[email protected]> wrote: > On Mon, Jan 5, 2015 at 6:10 PM, Werner Keil <[email protected]> wrote: > > ...If in a year or more the structure may so drastically change, that > some or > > all files became incompatible with the W3C standard, none of us can > tell... > > What are the requirements on our device data files to allow you to > produce a W3C DDR compatible client? > > My understanding is that W3C DDR is an API spec, so I'm not sure what > it has to do with how the data is stored. > > -Bertrand >
