The "requirements for a single logical device descriptions repository" were first published as a W3C Working Draft in April 2006<ref>{{cite web|author=David Sanders|title=Device Description Repository Requirements 1.0 (Draft)|url=http://www.w3.org/TR/2006/WD-DDR-requirements-20060410/|date=[[April 10]], [[2006]]|publisher=W3C (MIT, ERCIM, Keio)|accessdate=2007-12-10}}</ref> were first published as a W3C Working Draft in April 2006, and completed as a "Working Group Note in December 2007"<ref>{{cite web|author=Kevin Smith|title=Device Description Repository Requirements 1.0|url=http://www.w3.org/TR/2007/NOTE-DDR-requirements-20071217/|date=[[December 17]],[[2007]]|publisher=W3C (MIT, ERCIM, Keio)|accessdate=2008-04-09}}</ref> in December 2007.
The "DDR Simple API specification was published as a Working Draft of a proposed W3C Recommendation in April 2008"<ref>{{cite web|author=Jo Rabin, José Manuel Cantera Fonseca, Rotan Hanrahan, Ignacio Marín|title=Device Description Repository Simple API|url=http://www.w3.org/TR/2008/WD-DDR-Simple-API-20080404/|date=[[April 4]],[[2008]]|publisher=W3C (MIT, ERCIM, Keio)|accessdate=2008-04-09}}</ref> specification was published as a Working Draft of a proposed W3C Recommendation in April 2008.
