Hi, I finished my slides for the tutorial, maybe you're interested. And yes, I know that I won't have the time to show all slides ;-) I put the less important constraints at the end... Cheers, Thomas -- Thomas Bosch, M.Sc. (TUM) PhD Student GESIS - Leibniz Institute for the Social Sciences Social Science Metadata Standards Visitors Address: B2,1, D-68159 Mannheim Postal Address: P.O.Box 12 21 55, D-68072 Mannheim Tel: + 49 (0) 621 / 1246-271 Fax: + 49 (0) 621 / 1246-100 Web: http://www.gesis.org Website: http://boschthomas.blogspot.com/ GitHub: https://github.com/boschthomas/PhD