some XML questions

wxdqz

New Member
i am pretty new to XML but would like to try it out anyway. i have a few questions here...

Is there a way to manipulate the data between the tags in XML files through PHP dynamically? I don't mean all the tags in the xml file. I am just saying one of the tags in a xml file. is this possible?

Does XML largely used as data purposes? If yes, what are the advantages of using XML versus mySQL as database?

When the XML file is fed on your site, is there a way to disallow other website to feed your rss file? Or it must be public since it is something similar to html?
 
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