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CHAPTER7Composite Services with Service Bus

Composite services are a step beyond the elementary services that were discussed in the previous part. Composite services are services that combine two or more other services to create a service that provides more added value. Composite services invoke elementary services and other composite services, they may access multiple domains, coordinate a global transaction with multiple local transactions. An even simpler definition of composite service: do (substantially) more than straightforward request/reply VETRO. One reason for creating composite service is to prevent the same or very similar combinations ...

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