Introducing Web Services
Web services are:
1. Self-describing business functions
2. Accessible from any Web-connected device using:
Messaging Protocols – The messaging protocols are standards-based and are platform independent. These enable one service to call another one – SOAP over HTTP, JMS
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Programming standards – The underlying programming standards help create services that conform to a predefined structure. This means it is possible to figure out what the service does in a platform and
language independent way. – WSDL
Network registration – The services can be searched in a common way – UDDI
HTTP://WWW.W3SCHOOLS.COM/XML/XML_SERVICES.ASP