Wikidata should hold the data of all Wikipedias, that is its main purpose. However, it doesn't yet and there are many problems, i.e. missing references, population count moved to Commons and an open discussion to even throw out Wikidata from the infoboxes: https://en.wikipedia.org/wiki/Wikipedia:Wikidata/2018_Infobox_RfC 

DBpedia is more about technology than data, so we are trying to help out and push Wikidata, so it has all the values of all Wikipedias plus it's references: https://meta.wikimedia.org/wiki/Grants:Project/DBpedia/GlobalFactSync

All the best,

Sebastian

On 7 May 2018 at 00:15, Sylvain Boissel <sylvainboissel@gmail.com> wrote:

Le sam. 5 mai 2018 à 16:35, Andy Mabbett <andy@pigsonthewing.org.uk> a écrit

On 5 May 2018 at 14:39, David Abián <davidabian@wikimedia.es> wrote:

Both Wikidata and DBpedia surely can, and should, coexist because we'll
never be able to host in Wikidata the entirety of the Wikipedias.

Can you give an example of something that can be represented in
DBpedia, but not Wikidata?

Sure : DBpedia knows the specific values different versions of Wikipedia
choose to display in the infobox. For example, the size or population of
countries with disputed borders. This data is useful for researchers working
on cultural bias in Wikipedia, but it makes little sense to store it in
Wikidata.

Except that does; and Wikidata is more than capable of holding values
from conflicting sources. So again, this does not substantiate the
"Both Wikidata and DBpedia surely can, and should, coexist because
we'll never be able to host in Wikidata the entirety of the
Wikipedias" claim.