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XML-why do we need it & where is it being used??

 
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Hello Everyone,
I'm planning to take IBM-141 sometime in the future but there are some questions that are nagging me. As I understand it, XML is used to describe data and is far more efficient than HTML. I havent started preparing for it yet but I would appreciate if someone could shed light on why we need XML and for what purposes is it being used widely in IT industry. I'm asking this cos I know there are already some of you in this forum who are using it for various purposes. I just want to get your perspective on why it is so powerful if in fact it is.
Thanks in advance,
Srinivas
 
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I haven't used it, but from what I heard and read, it is a useful format for representing data. Data is XML format can be transformed using XSLT or CSS for different web or print forms. It can also be used as a data transfer format. Database packages can output data in XML format for use by other applications.
 
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There is an interesting discussion going on in the JavaRanch XML forum. Check it out. You will also find a plethora of very informative topics in the XML forum on general issues related to use, scope and growth of the XML technology. I encourage you to browse through the old topics. Although this background is not necessary to pass the test, it will give you a broader perspective.
 
srinivasan ganesan
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Thanks Joseph & Ajith. I'll definitely take a peek at it.
Srinivas
 
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