This lecture describes a vision in which programs written in different languages, running on different platforms, and connected via different network transports can discover one another and communicate.

• The SOA Vision and the protocol infrastructure
• Terminology: service, port, binding, port-type, operation, message, part.
• Reading a wsdl and identifying tns, service, and port
• Building a client using a platform: AXIS
• Building a client from scratch: SOAP

• Deploying a web service
• Data persistence
• XSD Returns
• Complex Returns

• Read Chapter 9.
• Visir the xmethod site, look at some WSDL documents, and try a few services
• Examine the wsdl of our First Web Service at: http://indigo.cse.yorku.ca:4413/axis/First.jws?wsdl
• Examine the client that consumes this service in the Resource Directory.
• Examine the file First.jws which constitutes the server of the first service.