Walmart has made several changes in its data communication systems to improve itssuppliers access to sales and inventory data. For example, the company added acustomized Web site for its suppliers, such as Mattel, Procter & Gamble, and Warner-Lambert. Walmarts goal is to improve efficiency in order to keep prices low and maintain ahigh level of customer service. With Walmarts network, suppliers can access sales,inventory, and forecasting data over extremely fast connections. To ensure confidentiality ofdata, a sophisticated security system has been implemented to prevent suppliers fromaccessing data about one anothers products.Walmart has also added Web-based access to its RetailLink system so suppliers can useinformation in the database. Other data communication applications at Walmart includeautomated distribution, computerized routing, and electronic data interchange (EDI).Walmart uses the latest in wireless technology in its operations for warehouse managementsystems (WMS) to track and manage the flow of goods through its distribution centers.Another application of wireless technology is for controlling and monitoring forklifts andindustrial vehicles that move merchandise inside its distribution centers. The VehicleManagement System (VMS) is the latest application of data communication at Walmart.Among other features, the VMS includes a two-way text-messaging system that enablesmanagement to effectively divert material-handling resources to where they are needed themost. (The VMS works effectively with RFID-based systems.) According to Walmart, theVMS has improved safety and has also significantly improved the productivity of its operations.

1. How has Walmart improved its data communication systems for suppliers? 2. What are some typical data communication applications at Walmart? 3. What are some of the applications of wireless technology at Walmart? 4. What are some of the features and capabilities of the VMS