Database Reference
In-Depth Information
The major reason for first routing the SOA composite application to Discovery Re-
gistry is to dynamically identify the endpoint of the services, the SOA composite
application then calls the endpoint. This enables decoupling of a SOA composite
application from a specific service provider. The services' definitions and their end-
points are stored as resources in the Discovery Registry. In other words, Discovery
Registry helps us to commoditize the services and the services can move for opera-
tional reason(s) without impacting the requests, that is, SOA composite applications.
Usually, registry is used along with the service bus. The service bus can examine the
property values to determine the endpoint and other security essentials for a service
provider that is the cheaper option from the available choices. The cheaper option
is usually evaluated by two factors; first is the performance SLAs and second is the
real dollars associated with third-party services.
There are various runtime options for the UDDI look-up with the Oracle Registry
while the Oracle Repository is used for design time. Oracle Registry installation has
different options to install UDDI look-up registry. The available options are listed as
follows:
•
Standalone Registry
:Developerscreateartifactsandenterdetailstothe
Standalone Registry. It is used for a personal development environment.
•
Publishing Registry
: Developers create artifacts and enter details to the
Publishing Registry. It is suitable for a development environment.
•
Intermediate Registry
: In the next step, we transfer specifications of
services and value sets along with taxonomy, WSDL interfaces, and re-
sources to the Intermediate Registry. It is used for a QA environment.
•
Discovery Registry
: Once the QA finishes the validation, the artifacts
are published in the Discovery Registry for the prime time use. It is used
for a staging and production environment.
All these install options facilitate the design to deployment life cycle for a UDDI re-
gistry. The following diagram shows the design to deployment life cycle model for the
Oracle Registry.
