[snip] >>> Martin Winsler wrote: >>>> Does anybody have any experience or knowledge of building >>>> financial accounting databases? [snip] I too was thinking about building a double entry accounting system and I've been following this thread closely, learning a few tricks on the way :) I've been gathering up ideas on how a db schema might look by reading the gnuCash tutorials on double-entry accounting, but does anybody know if there are open source applications that have already solved this on the db layer? filipe