XML Schema Part 0: Primer Second Edition publication history Date Status 28 October 2004 Recommendation 18 March 2004 Proposed Edited Recommendation 2 May 2001 Recommendation 30 March 2001 Proposed Recommendation 16 March 2001 Proposed Recommendation 24 October 2000 Candidate Recommendation Snapshot 22 September 2000 Working Draft 7 April 2000 Working Draft 25 February 2000 Working Draft