Chapter 3 (Web Services)

Chapter 3 (Web Services)

1. definition : an application component accessible over open protocol

2. Solve : Interoperability , Firewall travesal , Complexity

3. Role : Service provider , Service Registry , Service Requestor

4. Operation : Publish , Finding , Binding

5. Layer : Transport , Encoding , Messaging , Service description & binding , Transaction

6. Architecture :

   • SOAP
     • Charateristic
       • Extensibility , Neutrality , Independent
     • Element
       • Envelope(required) , Header , Body , Fault
     • Security
       • WS-Security specification
   • WSDL
     • An XML vocabulary for describing web services
     • Defines where service is available and what communication protocol is used.
     • Element
       • Port type , types , message , binding
   • UDDI
     • Directory for string information about web service