Re: why hierarchy?
From: Neo <neo55592_at_hotmail.com>
Date: 26 Jul 2006 18:41:54 -0700
Message-ID: <1153964514.460219.133430_at_p79g2000cwp.googlegroups.com>
Date: 26 Jul 2006 18:41:54 -0700
Message-ID: <1153964514.460219.133430_at_p79g2000cwp.googlegroups.com>
> You leave it up to us to infer the /what/ or /semantics/ by essentially guessing.
> That is inefficient and annoying.
A thing named Universe.
A planet named Mars.
A planet named Venus.
This example also models two hierarchies. In the first hierarchy, John and Mary are children of Adam and Eve who are children of God. In the second hierarchy, John and Mary are part of Mars and Venus respectively which are part of the Universe.
Even though John and Mary are in both hierarchies, they are not stored redundantly. To verify this, enable the displaying of each thing's ID via the View Menu. Received on Thu Jul 27 2006 - 03:41:54 CEST