Explain why UDDI can be described as being both a name service and a directory service, mentioning the types of enquiries that can be made. The second ‘D’ in the name UDDI refers to ‘discovery’ – is UDDI really a discovery service?
What will be an ideal response?
a white pages (name) service - it holds lists of organisations enabling clients to look up a service against an organisation;
a yellow pages (directory) service - it allows clients to look up services by category or by interface; information can also be looked up by a key which is a sort of URI.
A discovery service is a directory service that is designed to register the services provided in a spontaneous networking environment. It allows the set of clients and services to change dynamically without user intervention. UDDI does not do those things.
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