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What is UDDI?

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What is UDDI?
posted Feb 10, 2014 by Merry

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UDDI is a platform-independent, Extensible Markup Language (XML)-based registry by which businesses worldwide can list themselves on the Internet, and a mechanism to register and locate web service applications.
- UDDI stands for Universal Description, Discovery and Integration.
- UDDI is a specification for a distributed registry of Web services.
- UDDI is platform independent, open framework.
- UDDI can communicate via SOAP, CORBA, Java RMI Protocol.
- UDDI uses WSDL to describe interfaces to web services.
- UDDI is seen with SOAP and WSDL as one of the three foundation standards of web services.
- UDDI is an open industry initiative enabling businesses to discover each other and define how they interact over the Internet.

UDDI has two parts:
- A registry of all a web service's metadata including a pointer to the WSDL description of a service
- A set of WSDL port type definitions for manipulating and searching that registry

A UDDI business registration consists of three components:
White Pages — address, contact, and known identifiers;
Yellow Pages — industrial categorizations based on standard taxonomies;
Green Pages — technical information about services exposed by the business.

UDDI Nodes & Registry
UDDI nodes are servers which support the UDDI specification and belong to a UDDI registry while UDDI registries are collections of one or more nodes.

SOAP is an XML-based protocol to exchange messages between a requester and a provider of a Web Service. The provider publishes the WSDL to UDDI and the requester can join to it using SOAP.

answer Feb 10, 2014 by Salil Agrawal
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