Introduction

To assemble one single title that deals with all the possibilities and potential of XML is nearly an impossible task. The problem stems from the fact that XML is more than just a single technology based on a single Recommendation from the W3C. What started as a very simple means to allow people to develop their own markup languages has quickly grown into more than a dozen interrelated and interconnected technologies, all of which, in some form or another, could be termed XML.

At the core of the whirlwind of XML activity is the XML 1.0 Recommendation, which started a giant snowball of technology when it was introduced as a formal Recommendation in 1998. XML started with the goal of simplifying SGML for use on the Web, with the idea ...

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