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Oracle SOA Suite 11g R1 Developer's Guide by Antony Reynolds, Matt Wright

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Chapter 3. Service-enabling Existing Systems

The heart of service-oriented architecture (SOA) is the creation of processes and applications from existing services. The question arises, where do these services come from? Within an SOA solution, some services will need to be written from scratch, but most of the functions required should already exist in some form within the IT assets of the organization. Existing applications within the enterprise already provide many services that just require exposing to an SOA infrastructure. In this chapter, we will examine some ways to create services from existing applications. We refer to this process as service-enabling existing systems. After discussing some of the different types of systems, we will look ...

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