Oh omniscient and omnipotent Locians, gASQL is a Gnome interface to PostgreSQL: http://malerba.linuxbox.com/ Look at the screenshots to see how 'relations' are respresented graphically. CerebellumSoft was mentioned before on this list: http://www.cerebellumsoft.com/products/index.shtml Note in particular the use of Workflow Diagrams: http://www.cerebellumsoft.com/slides/Slide9.html http://www.cerebellumsoft.com/slides/Slide10.html And Clementine, which does data-mining, was mentioned before: http://www.spss.com/clementine/ Clementine slideshow: http://www.spss.com/clementine/newshow/sld001.htm Cheers. Jeff -- +----------------------------------+ | J.W. Bizzaro | | | | http://bioinformatics.org/~jeff/ | | | | THE OPEN LAB | | Open Source Bioinformatics | | | | http://bioinformatics.org/ | +----------------------------------+