How XML and web services change the web applications

The scalability, reusability and the efficiency of the web applications are drastically increased with the use of XML and Web Services.

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With the web services you can invoke the remote objects in the remote server. The details of the object that has to be invoked can be sent through an XML document format using the SOAP (Simple Object Access Protocol).

This XML document has the name of the object that has to be invoked and it has to be in a predefined format. There are elements for this purpose that is used in that XML document.

If you have a web service that can be used by others you can publish it in the UDDI and others can find it and use it from that directory. With the use of XML the message that is passed to the remote server is readable by human and can be transferred through the firewall. This is one of the greatest advantages of using XML in web services.

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