Quote:
Originally posted by fnet
Close- it does have a tree node structure that helps in manipulating the data and interfacing with the presentation layer, which is important. It's also a raw grammar, and can be manipulated just like a regular expression. Extensible description frameworks are also quite helpful in semantic searches.
These are some of the <i>big</i> reasons it's important in general. In this context, we're just talking about the syndication of news, and attribution to a source.
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XML doesn't have to have any kind of tree structure at all. By definition, it's just a way of formatting data (a very bloated way, actually). It can be nothing but a long list of values. It DOES add another CPU-intensive layer to whatever process you're using it with, so I really question it's functionality (after being an XML developer for several years).