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Home -> Community -> Usenet -> comp.databases.theory -> Re: Nested Sets And Pedigrees
"--CELKO--" <71062.1056_at_compuserve.com> wrote in message
news:c0d87ec0.0204091405.2295590a_at_posting.google.com...
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Was my proposal really that unclear? There is no problem if you realize that there are actually two hierarchies involved. One hierarchy is defined by the father-of relationship and the other hierarchy is defined by the mother-of relationship. Both relationships define true hierarchies and can be represented with the nested-sets approach.
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