SOAP, UDDI, Web Services, and the Semantic Web

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SOAP, UDDI, Web Services, andthe Semantic Web

• Justin R. Erenkrantz
• ICS 221
• December 3rd, 2002

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Web Services

• Identified by URI, HTTP, and XML
• Making websites more than content
• Enabling extensible interactions
• Ideally public, perhaps private
• Commercial web services

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SOAP

• W3Cs Simple Object Access Protocol
• XML-centric middleware data format
• Origins from simpler XML-RPC
• Nodes, roles, faults
• Typically bound to HTTP
• Interesting architectural mismatches

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UDDI

• Universal Description Discovery and Integration
• Acts as a naming service for Web Services
• Built on top of SOAP
• Distributed repositories
• Publish/subscribe support
• SOAP callbacks

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Semantic Web

• Crown Jewel
• Meaningful interpretation of web content
• Not just interactions, but understanding
• Each semantic web site agrees on meaning
• Effects of non-participation