1Z0-574 Exam Dumps | Which statements are correct for service versioning within Service-Oriented Integration?

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Question 102/176

Which statements are correct for service versioning within Service-Oriented Integration?

A. Only one production version of each SOA Service should be allowed. Multiple versions cause service sprawl.

B. Service consumers should be allowed to migrate to new versions of SOA Services over time as part of regular maintenance.

C. Service consumers should be automatically migrated to new versions of SOA Services by using the mediation layer to perform any necessary translations or transformations.

D. At most two versions of an SOA Service are allowed in production, one current and one that's deprecated.

E. The architecture must support multiple, concurrent production versions of SOA Services.

Correct Answer: B,E

Explanation/Reference:
B (not C): Service consumers are able to migrate to a newer version of a SOA Service gracefully.
Service consumers should migrate to a new version of a SOA Service as part of a normal maintenance process. The coordinated deployment of service consumers and service providers should not be necessary.
Implications:
* A service migration strategy needs to be established.
* The architecture must support graceful service migration.
E (not A, not D): There may be multiple versions of a SOA Service in production concurrently.
Invariably a SOA Service will require modifications to support new consumers or to expand functionality.
Supporting concurrent versions of a SOA Service is essential for a sound service versioning approach.
Implications:
* A service versioning strategy needs to be established.
* The architecture must support multiple, concurrent versions of a SOA Service.
Reference: Oracle Reference Architecture, Service-Oriented Integration, Release 3.0

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