Semantic web services PPT, Slides of Web Programming and Technologies

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MODULE 3

DEVELOPING WEB SERVICES

IN JAVA

Contents

 (^) Introduction  (^) Architecture  (^) WSDL  (^) SOAP  (^) UDDI  (^) Working  (^) Advantages  (^) Conclusion

Architecture

Architecture

Simple Object Access

Protocol

 (^) SOAP is lightweight protocol intended for exchanging of structured information in a decentralized distributed environment.  (^) SOAP uses XML technologies to define an extensible messaging framework, which provide a message to construct that can be exchanged over a variety of underlying protocols.  (^) It represents the main way of communication between the three key factors in a services oriented architecture

 Universal Description Discovery Integration

 (^) UDDI is both a Client API and a SOAP based server implementation that can be used to store and retrieve information on service providers and web services.  (^) UDDI define a way to publish and discover information about web services, which is specific business functionality exposed by a company via internet.  (^) The information that provided in UDDI consists of three components: White Page, Yellow Page, Green Pages.

Advantages

 (^) Interoperability: Web services are accessible over network and runs on HTTP/SOAP protocol and uses XML/JSON to transfer of data.  (^) Reusability: One web services can be written in JAVA programming and client can be PHP and vice versa.  (^) Easy to deploy and integrate, just like web application.  (^) Multiple services versions can be running at same time.

Conclusion

 (^) The data in our lives is a web.  (^) The web services in JAVA is an initiative that aims at improving the current state of the World Wide Web.  (^) The JAVA web services is going to be very powerful.  (^) JAVA web services works over the entire scale around the world via internet.