Patent ID: 7698168

Claim:
A method by computer for requesting selection of a product comprising: associating element products with one another and preparing presentation data for each group of products, based on a product list including specific products as products which are sold as individual products and as said element products included in said group of products, said associating including associating each product and associated element product having a same product number; storing in a memory group product codes each of which is a product code of an element product constituting a group of products; prompting selection of a product by presenting said product presentation data; searching said memory for other associated elements of a particular group product code when a search request is received for a first element associated with said particular group product code; receiving a purchase-requested product data in which said element products are assigned a purchase group number for all elements of said group of products; and displaying an indication of the other associated elements, wherein said associating includes referencing a first memory section and a second memory section, said first memory section includes a first address that holds a pointer to an address in said second memory section indicating that a content of said address in said second memory section represents a last product in a group of products identified in successive addresses in said second memory section, and said second memory section holding address locations of the elements of said group of products to which said purchase group number is assigned.