Hi,
The answers of most of the questions you've asked can be found in The
Data Model Resource Book, chapter 3.
http://www.amazon.com/Data-Model-Resource-Book-Warehouse/dp/0471153648I'm pretty sure google can point you to a download location as the book
is pretty old:)
-- Deyan
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From: buzlite <
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Subject: Virtual Products and Variants
Date: Tue, 1 Sep 2009 06:10:52 -0700 (PDT)
only one virtual product?