CHAPTER 1: The Development of Web Services

CHAPTER 1: The Development of Web Services

1. 1.2 : The Development of Web Services

   • framework
     • XML based
       • SOAP, WSDL, UDDI
       • interoperability
       • to support machine to machine interactions
   • Architcture of web service
   • SOAP - Simple Object Access Protocol
     • XML message format between client & service
   • WSDL - Web Service Description Language
     • describe how service used
     • guideline to construct SOAP message
     • XML for writing APIs

2. 1.3 : Future of Web Services

   • QoS
     • availibility
     • accessibility
     • conformance to standards
     • integrity
     • performance
     • reliability
     • scalability
     • security
     • transactinality
   • SLAs- Service Level Agreements
     • purpose
     • parties
     • validity period
     • scope
     • restrictions
     • penalties
     • exclusion terms
     • admin authority

3. 1.1 : Web services Issues

   • Service Oriented Paradigm
     • Utilizes services to support rapid development, low cost & easy composition
   • Web Services
     • A self contained business task
     • A full fledged business process
     • An application
     • A service enabled resource
     • Characteristics
       • Can be mix and match
       • Platform independent
       • Pricing based on subscription and usage
   • ASP - Application Service Provider
     • rents application to subs
     • to provide working solution
     • customize beyond appearance of user interface
     • can be operated remotely via browser
   • Where to used
     • Enterprise apps integration
     • e-business integration

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