UDDI defines data structures and API’s (programming
interfaces) for publishing service descriptions in the
registry and serves as a mechanism for discovering where
specific Web Services are provided and who provides
them. The information contained in UDDI is categorized
in white, yellow and green pages by OASIS (Organization
for the Advancement of Structured Information Standards)
[33]. In the UDDI registry, a Web services description
contains information about business information, service
information, binding information and information about
specifications of services. This information is described by
different entities [1]. Schematic view of UDDI registry is
presented in Figure 2.