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Category: Web Services A Manager’s Guide

 < Free Open Study >    Making the Initial Cut Start your selection process by identifying your available options. Invariably, you want to make your first cut based on language and operating system. You also should consider licensing and support issues. Language and Operating System A Web services platform supports a limited set of languages and operating […]

 < Free Open Study >    Evaluating Your Requirements After you have made your initial cut, you now want to start evaluating products based on your project requirements. I like to start with performance and scalability. Make sure that you understand what your requirements are for these characteristics. How many concurrent clients will you need to support? […]

 < Free Open Study >    Executive Summary Because nearly every application project involves integration, you can use Web services almost anywhere. But when you have a hammer, everything looks like a nail. As with any situation, it’s always a good idea to use the right tool for the job. Web services are useful and versatile, but […]

 < Free Open Study >    Chapter 8. Web Services Infrastructure Thus far we’ve talked a lot about why and where you might use Web services. Although we’ve looked at the basic technology that supports Web services, we have yet to talk about what you need if you want to build Web services. You don’t build applications […]

 < Free Open Study >    Core Products The core products provide the basic infrastructure that supports Web services. These products, which implement the Web services technologies, can be divided into three subcategories: Web services platforms, Web services management extensions, and infrastructure-level Web services. Figure 8-2 shows an overview of these types of products. Figure 8-2. The […]

 < Free Open Study >    Other Web Services Applications Web services can help you accomplish many types of business goals. You can use Web services to solve immediate tactical problems. You can use them to help you manage your software assets, leverage legacy applications, and reduce development costs. Web services can also help you optimize your […]

 < Free Open Study >    When Not to Use Web Services As much as I like Web services, I want to caution you that they aren’t always the appropriate solution. XML is tremendously versatile, but it isn’t the most compact or efficient mechanism for transferring data. A SOAP message is much bigger than a comparable native […]

 < Free Open Study >    Web Services Hype Web services have been a victim of the hype hurricane. We’ve heard the far-fetched stories: Web services will revolutionize computing; Web services will enable dynamic assembly of software components; Web services will enable dynamic business relationships. Although technically most of these stories are plausible, realistically many of them […]

 < Free Open Study >    Dynamic Binding As described in Chapter 3, Web services support dynamic binding, a powerful capability that no other middleware technology provides. Using dynamic binding, an application can talk to multiple Web services through a single common interface. Figure 6-1 is almost identical to Figure 3-4, but I want to repeat this […]

 < Free Open Study >    What Makes Web Services Special Perhaps UDDI won’t let you form new business partnerships on-the-fly, but it does help you build extremely flexible and dynamic applications. In 2002, the science fiction hype was threatening to knock Web services off course. Even so, it appears as if Web services have weathered the […]

 < Free Open Study >    Truth in Hype There’s a reason the Web services hype has gotten a bit out of hand. The dynamic features of Web services have sparked people’s imaginations. Web services will let us do things that we’ve never been able to do before. That’s why the system and application vendors have adopted […]

 < Free Open Study >    Chapter 7. When to Use Web Services There are many compelling reasons to use Web services. It seems as if everyone is at least playing with Web services. Almost every software vendor is building support for Web services into its platforms, languages, and tools. Web services enable any-to-any integration, supporting any […]

 < Free Open Study >    Bell Ringers Which applications would benefit most from Web services? Where should you start? What are the key criteria that should ring a bell in your head and make you think, “This is a job for Web services”? Heterogeneous Integration The first and most obvious bell ringer is the need to […]

 < Free Open Study >    Reliability Reliability is another area of contention. “Reliability,” also known as reliable message delivery, refers to the ability to guarantee the proper delivery of messages, in the right sequence, within an acceptable time frame. Reliability is often associated with transactions and choreography because it provides a foundation for loosely coupled, asynchronous […]

 < Free Open Study >    Portlets and Interactive Applications One other area of high interest is that of portlets and interactive applications. One of the most obvious places to use Web services is as a content provider for a portal. Portals provide a convenient, personalized interface to numerous applications. But to make an application available to […]

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