This book presents a comprehensive, systematic approach to building advanced, Web-based enterprise applications. Three technologies are converging to dramatically change the nature of application development: client/server, object-orientation, and the Internet. This book is a complete guide to successfully integrating all of these technologies in new enterprise applications. Expert consultant and project manager Dr. Amjad Umar shows how to establish data architectures, application architectures, and frameworks that enable successful Web-based software development. He presents a detailed methodology for using middleware to engineer new applications, or reengineer existing ones. He also offers a systematic approach to cope with legacy systems - including legacy data access, data warehousing and application migration/transition strategies. For each major issue confronting developers, he considers the state of today's marketplace, as well as trends that will powerfully impact development in the near future. The book contains extensive guidelines, implementation examples and case studies, using a wide range of technologies, including CORBA, ActiveX, PowerBuilder, Encina, and Web gateways such as CGI. All IT professionals, trainers, teachers and advanced students.