The proposed vehicle information management system based on Struts architecture is designed for the management of stock, customer, and financial information for used vehicle dealerships. Struts architecture and UML extension mechanism are applied to provide a safe and efficient MVC framework, to reduce the complexity of authorization management, to enhance the system stability, to realize the entire sales data sharing, and to support the security tactics of port in more flexible way. The product not only tracks and reports all information relevant to vehicle acquisition, preparation of vehicle...