On Monday 12. April 2010 16.57.38 Rob Sargent wrote: > Believe me: "ego-ma-pa" will correctly define genealogical relationships > (at least among humans).
Yes, but a family tree is not a hierarchical tree as defined in database theory. Believe me: I'm a genealogist. Hint: Where is the root node of a family tree? Old Adam & Eve? On the other hand, a pedigree may be considered a true binary tree with a root node, the proband. regards, -- Leif Biberg Kristensen http://solumslekt.org/ -- Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-sql
