Go back to 1Z0-478 - Oracle SOA Suite 11g Essentials Exam

Question :-

What does service abstraction do?
It hides the implementation details of a service. Including the location of the service, the interface, and the idempotence of the operations.
It creates services quickly and easily for a variety of back-end technologies.
It translates and transforms messages.
It mediates security models.

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