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PowerBuilder® 9: Internet and Distributed Application Development by John D. Olson, Bill Green

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XML Technologies

There's a lot more to XML than just the tagged document. A growing number of technologies support the use of XML and expand the capabilities of using XML. Although XML by itself is a powerful feature that can be used in many ways, we want to spend some time on several key technologies.

Parsers

For a program to be capable of using XML, it must be capable of unraveling the document content. To do this, you use an XML parser, a program, or a set of classes that understands the format of an XML document and that provides you with a programming API to access the content of the XML document. You'll hear about a lot of parsers out there, but in reality, the parsers that you hear about are implementations of one of two XML parsers: DOM ...

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