Same thought happened to me... "Code or it didn't happen" If you're interested in this you could play with some other graph-based databases though, for example

Same thought happened to me... "Code or it didn't happen" If you're interested in this you could play with some other graph-based databases though, for example http://infogrid.org/ http://infogrid.org/, or see http://en.wikipedia.org/wiki/Graph_database http://en.wikipedia.org/wiki/Graph_database for an overview. Many open source implementations exist.