|This page in a nutshell: Wikipedia fetches interwiki links from the Wikidata central database. Wikipedia also fetches some data from Wikidata.|
Wikidata is a Wikimedia project to create an open and collaborative database. It stores relational statements about an entity as well as the interwiki links associated with the pages on the Wikimedia projects that describe that entity. The English Wikipedia uses these interlanguage links stored at Wikidata, and has some limited applications for the statements made in Wikidata.