抄録
In recent years, electronic commercial transactions have been getting popular. We attend to develop an electronic shopping mall available to the Internaet. This shopping mall is constructed by a server computer for receiving the orders together with existing databases of the stores which are connected with the server computer. For giving fresh information of the goods to the purchasers, it is indispensable that the server computer and each trader's database frequently exchange messages. We also supply the methods which support the communication.
Gathering traders of the same goods will lead to a commercial competition. As a result, purchasers will buy fine goods at a lower cost, while the sales dealer will make it easier to secure the new customers and repeaters.
