Electronic shopping system and method of defining electronic catalogue data therefor

摘要

Product data information to be stored in a product database is defined by setting essential items necessary to define products with respect to their essential parts, and setting optional items necessary to define optional products deriving from standards product defined by their essential items. A product definition section produces product data information on standard products based on the set essential items, and produces product data information on optional products based on the set optional items. This product data information is transferred from an electronic shop client to an electronic mall server to be stored into the product database through a product registering section.