Yellow Pages (UDDI)

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Yellow Pages are one of the three main components of UDDI (the protocol for discovering Web Services on the internet). The other components are White Pages for describing the business, and Green Pages for describing how to access the service.

Yellow pages provide a classification of the service or business, based on standard taxonomies. These include the Standard Industrial Classification (SIC), the North American Industry Classification System (NAICS) [1], or the United Nations Standard Products and Services Code (UNSPCS) .

Because a single business may provide a number of services, there may be several Yellow Pages (each describing a service) associated with one White Page (giving general information about the business).


  1. Taylor, Ian J. From P2P to Web Services and Grids - Peers in a Client/Server World. Springer, 2005
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