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From the vice president and chief technologist for SOA at Oracle Corporation

Dave Chappell

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Top Stories by Dave Chappell

Since releasing my latest book, Enterprise Service Bus (O'Reilly Media, 2004), I have been doing a fair amount of visiting corporations, conducting seminars, and generally discussing with enterprise architects the subject of enterprise service-oriented architecture (SOA) and how an enterprise service bus (ESB) backbone can be leveraged to provide a framework for an enterprise SOA. Along the way, I have been asked many questions about the nature of an ESB. I have also fended off some misconceptions that have been growing in the general IT population regarding what an ESB is and when, where, and how it can be used. I have gathered together the most popular questions and misconceptions, and offer some clarity in the form of a "top ten" list. Myth #1. ESB is just a new name for EAI. While many IT architecture groups are focusing on building SOAs, they still inevitably be... (more)

Service-Oriented Integration: Making the Right Choices to Support Next-Generation Integration

  Applications are increasingly being developed "built-to-integrate," providing the ability to easily expose key functionality through commonly defined interfaces. Gartner calls this concept SODA, or Service-Oriented Development of Applications, fitting into its overall Service-Oriented Architecture landscape. When applied to the ever-present integration challenge, SODA represents a transition to service-oriented integration. In this presentation, Chappell will examine the leading choices for supporting service-oriented integration: enterprise service buses (ESBs), integration ... (more)

Reliable SOAP for Web Services Messaging Has Finally Arrived! Leading IT Vendors Join Forces to Create Web Services Reliability

(January 14, 2003) - On Thursday January 9, Sonic Software and a number of other leading IT vendors, including Fujitsu Limited, Hitachi, Ltd., NEC Corp, Oracle Corp., and Sun Microsystems, announced a proposal for a new Web services specification for reliable messaging: Web Services Reliability (WS-Reliability). The companies plan to submit WS-Reliability to a standards body on a royalty-free basis in the near future. Along with security, reliable asynchronous communications has been one of the gaping holes in today's Web services architecture. Lack of reliability, due to the inh... (more)

A Real-World Example

Last month "The JavaMessage Service and XSLT for E-Business Messaging" (XML-J, Vol. 2, issue 2) explored the concept of using JMS as the basis of a communications architecture for transporting XML data between applications and an XSLT translation engine for transforming business documents from one form of XML to another. XSLT works great as a data translation strategy if all parties concerned are already speaking some kind of XML dialect. But the real world isn't like that. XML isn't yet ubiquitous, and there's no big switch on the wall you can flip to have every application in ... (more)

ESB Integration Patterns

The past several years have seen some significant technology trends, such as service-oriented architecture (SOA), enterprise application integration (EAI), business-to-business (B2B), and Web services. These technologies have attempted to address the challenges of improving the results and increasing the value of integrated business processes, and have garnered the widespread attention of IT leaders, vendors, and industry analysts. The enterprise service bus (ESB) draws the best traits from these and other technology trends to form a new architecture for integration. The ESB conc... (more)