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Overview
of XML webservices
XML
Web services can be thought of the building blocks for distributed computing
over the internet. A particular functionality can be exposed as a web
service and that can be used by others in their programming, thus enabling
them not to program the same service again.
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Services
from different sources can be integrated to create a powerful web application.
Communication between the web-applications is done through XML technologies
that form the basics of any web service.
The protocol
that is used to expose the functionality is the SOAP. For any other user
to use that functionality in their application, the web service has to
be described properly with all the interfaces available.
This is done
by WSDL document which is the Web Services Description Language document.
To find out which web services are available, they are registered through
UDDI - Universal Discovery Description and Integration.
Communication
between a web service and an application is through SOAP, hence the application
can be written in any language. Moreover it is less complex than the earlier
methods used for such communications like DCE and CORBA.
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