Which is it, a multi-parent tree or a digraph? They are not the same thing.
In particular, a multi-parent tree would be a digraph that is connected and has no cycles. A digraph is not necessarily connected and can have cycles.
[font="Times New Roman"]-- RBarryYoung[/font], [font="Times New Roman"] (302)375-0451[/font] blog: MovingSQL.com, Twitter: @RBarryYoung[font="Arial Black"]
Proactive Performance Solutions, Inc. [/font][font="Verdana"] "Performance is our middle name."[/font]