A.2 Vocabularies and Namespaces
If this is all there is to XML, what makes it so powerful and so widely used?
XML itself is just a foundation, and on that foundation a lot of buildings have been, are being, and undoubtedly will be erected. You won’t believe how many valuable programmer resources were wasted before the advent of XML on inventing new data formats for each application, formulating their rules, writing and testing software to support them, and working around the inevitable bugs, exceptions, and version incompatibilities.
All this misery is now a thing of the past. Now, if you need to record some data, you don’t need to go into the low-level details of which characters have special meanings and what are the sizes of various fields. By ...
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