Web Services

Web Services

1. definitions

   • Is self-describing via a common XML grammar,
   • Is available over the Internet or private (intranet) networks,
   • Is not tied to any one operating system or programming language
   • Uses a standardized XML messaging system
   • Is discoverable via a simple find mechanism. Components of Web Services

2. components

   • SOAP (Simple Object Access Protocol)
   • UDDI (Universal Description, Discovery and Integration)
   • WSDL (Web Services Description Language)

3. using open standards

   • SOAP
   • XML
   • HTML
   • WSDL

4. The steps to perform this operation are as follows

   • The client program bundles the account registration information into a SOAP message
   • This SOAP message is sent to the web service as the body of an HTTP POST request
   • The web service unpacks the SOAP request and converts it into a command that the application can understand
   • The application processes the information as required and responds with a new unique account number for that customer.
   • Next, the web service packages the response into another SOAP message, which it sends back to the client program in response to its HTTP request.