Abstract: A delivery notification (D/N) system based on an electronic communications network is provided for performing delivery notification tasks in real time. Each user of the D/N system is assigned with a username and a password that cooperate to uniquely identify the user and determine a specific authority for the user to access the D/N system. The D/N system comprises a base information module including all base information needed by the D/N system, a demand module which allows a purchaser to key in and store purchase order information on the network and to browse delivery information provided by suppliers, a supplier module which allows suppliers to browse and confirm the purchase order information in real time and to create delivery information and store the delivery information in the D/N system, and a reporting module which allows users to search information and to print out searched information in tabular format.