Describe GregNockolds here. Data Administrator Email: grno@dct.wa.gov.au Ended up here by straying a few links beyond references to David C Hay. Have just read his book "Data Model Patterns - Conventions of Thought" which I can highly recommend. This site looks very interesting, I was overwhelmed by some of the projects, they need (and deserve) more than an on-line browse to pass any more judgment than that. I've bookmarked it and plan to return real soon, in the interum I will continue my quest for Data Patterns. (last edited September 20, 1997) This editing feature is great, I just hope you get more worthwhile contributions than this for your efforts. ---- CategoryHomePage