Hi, I've put an ER diagram for the MPI_EVENTS at: https://papio.biology.duke.edu/babasewiki/MultiPartyInteractionDevelopment Please take a look. It's a bit different from everything else because the view has some computed columns. (Denoted by dotted lines.) Karl <kop at meme.com> Free Software: "You don't pay back, you pay forward." -- Robert A. Heinlein