"This book...gives EAI architects and developers the opportunity to learn directly from the authority on distributed computing, EAI, and CORBA." -David S. Linthicum Chief Technology Officer, SAGA Software, Inc. In this book a CORBA pioneer provides proven, cost-effective techniques for integrating enterprise applications (including legacy applications) into modern, multiplatform systems. He also offers valuable advice and guidance on how to build new CORBA-based applications using the latest features of CORBA 3 . With the help of numerous case studies and examples, he provides detailed solutions for specific integration problems along with step-by-step guidance on: * Using CORBA as the infrastructure for EAI * Architecture principles for integrating the Web and back-end systems * CORBA Component Model for component-based development * Relationship of CORBA components to DCOM, JavaBeans, and Enterprise JavaBeans * Using the essential CORBA services * Object wrapping techniques for integrating legacy applications into multi-platform systems * Building secure, multiplatform Web applications On the companion Web site at www.wiley.com/compbooks/zahavi/ you'll find: * Articles on related topics * Continually maintained ORB and integration server, vendor, and product comparisons * A dynamic discussion group on architectural best practices

Learn to utilize today's hottest EAI technologies to ensure interoperability across your organization What exactly is enterprise application integration (EAI)? What makes this $300 million market so hot that it's expected to grow to $6.5 billion in the next two years? How do you apply it in the real world? Whether you're an IT professional or systems architect, business manager or software developer, if you're looking into EAI as a solution for unifying applications and systems across the enterprise, then the answers are in this book.You'll find a complete and unbiased survey of the different technologies, architectures, and approaches available for EAI implementations, including pros and cons, clear explanations of all concepts, and first-rate guidance on how to choose the best EAI strategy for your company. The authors draw on their pioneering work with early implementations to show you how to: * Define your specific integration problem in a useful form that enables a real solution * Develop your own EAI architecture and ensure interoperability of legacy, stovepipe, COTS, client-server and modern technology applications * Choose the best among messaging architecture, object architecture, and transaction architecture * Work with the best implementation technologies, including Microsoft's COM+, the OMG's CORBA, and Sun's EJB * Utilize the proven Secure Application Integration Methodology (SAIM) Wiley Tech Briefs Focused on the needs of the corporate IT and business manager, the Tech Briefs series provides in-depth information on a new or emerging technology, solutions, and vendor offerings available in the marketplace. With their accessible approach, these books will help you get quickly up-to-speed on a topic so that you can effectively compete, grow, and better serve your customers.

An expert guide to solving real business problems using components This groundbreaking book gets developers up to speed on Enterprise JavaBeans, CORBA components, and other cutting edge technologies that are making it easier and cheaper than ever for companies to integrate all of their applications into unified systems to support corporate decision-making. Fred Cummins presents an overview of the integration architecture and then dives right into the details, including communications messaging techniques for integrating application components, the "publish and subscribe" mechanism for linking components and monitoring business activities, using "adapters" to integrate applications, integrating Web services, work-flow management, and he also supplies proven code solutions for an array of problems associated with integrating packaged and custom applications across the enterprise. Companion Web site features source code and updates on the EAI architecture and underlying technologies.

Middleware is a layer of software that lets business applications inter-operate and eases the problem of constructing complex applications that can include market places, CRM and Internet access. The world of middleware has recently been galvanised by the arrival of the Internet and then by Java, making it part of the e-commerce revolution. This text provides a practical introduction to the different forms of middleware (RPC, message queues, hub and spoke, CORBA and Java) and how they can be combined to produce complex architectures that are suited to business needs. -Contributes to the diffusion and understanding of the importance of the role of middleware in the design of complex information systems. -Relevant text for courses on Information Technology applied to Business Management. -The first edition of this title was a bestseller.

Like many other incipient technologies, Web services are still surrounded by a substantial level of noise. This noise results from the always dangerous combination of wishful thinking on the part of research and industry and of a lack of clear understanding of how Web services came to be. On the one hand, multiple contradictory interpretations are created by the many attempts to realign existing technology and strategies with Web services. On the other hand, the emphasis on what could be done with Web services in the future often makes us lose track of what can be really done with Web services today and in the short term. These factors make it extremely difficult to get a coherent picture of what Web services are, what they contribute, and where they will be applied. Alonso and his co-authors deliberately take a step back. Based on their academic and industrial experience with middleware and enterprise application integration systems, they describe the fundamental concepts behind the notion of Web services and present them as the natural evolution of conventional middleware, necessary to meet the challenges of the Web and of B2B application integration. Rather than providing a reference guide or a "how to write your first Web service" kind of book, they discuss the main objectives of Web services, the challenges that must be faced to achieve them, and the opportunities that this novel technology provides. Established, as well as recently proposed, standards and techniques (e.g., WSDL, UDDI, SOAP, WS-Coordination, WS-Transactions, and BPEL), are then examined in the context of this discussion in order to emphasize their scope, benefits, and shortcomings. Thus, the book is ideally suited both for professionals considering the development of application integration solutions and for research and students interesting in understanding and contributing to the evolution of enterprise application technologies.

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