A server connected with a portable terminal via a network (1) manages commodity data and quotation data in a database, (2) sends the commodity data or the quotation data to a portable terminal and displays the commodity data or the quotation data on a screen in response to an inquiry from the portable terminal, (3) and sends a sequence of ordering screens for commodities which have dimensional specifications to the portable terminal and displays the sequence of ordering screens on the screen at a request from the portable terminal, which in turn places orders by entering commodity specifications including dimensional specifications according to the displayed sequence of ordering screens. |