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Enterprise Application Integration With XML and Java™ by Bill la Forge, JP Morgenthal

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2.6. Summary

In this chapter, we discussed the requirements for building a virtual application, which is an application that can access all corporate data from a single point. To accomplish this task, we employed a declarative environment that provided us with the ability to integrate individual applications in an isolated manner, but resulted in making each application's data available to the enterprise at large.

One decision that needs to be made when developing an EAI Infrastructure that will power a declarative environment is whether to use the data sharing or data exchange technique. Each has different requirements and offers different benefits. Data sharing is more complex and has a high degree of maintenance, but it allows the data's owner ...

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