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Do More with SOA Integration: Best of Packt by Doug Todd, Arun Poduval

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Chapter 11. Loosely Coupling Services

In this chapter we will explore how service virtualization through the Service Bus of the Oracle SOA Suite can be used to deliver more loosely coupled services.

Coupling

Coupling is a measure of how dependent one service is upon another. The more closely one service depends on another service, the more tightly coupled they are. There have been a number of efforts to formalize metrics for coupling and they all revolve around the same basic items. These are:

  • Number of input data items: This is basically the number of input parameters of the service.
  • Number of output data items: It is the output data of the service.
  • Dependencies on other services: It is the number of services called by this service.
  • Dependencies of ...

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