Dave, I won't directly answer your question b/c I'm new to building DBs myself, but I found this book very useful in explaining the theory of planning and building DB (platform and software independent). "Database Design for Mere Mortals" by Mike Hernandez http://www.amazon.com/exec/obidos/ASIN/0201694719/qid=1014486390/sr=1-1/ref= sr_1_1/102-6197100-0599342 (watch that wrap) Regards, Bob Haroche O n P o i n t S o l u t i o n s http://www.OnPointSolutions.com