A serious look at how to use XML in sophisticated real-world Web applications, Professional XML goes beyond your run-of-the-mill tutorial by giving you practical examples and techniques. The book focuses on W3C XML and the various enabling technologies that are becoming entwined with XML. It provides three threads of content, representing the different angles from which readers will approach XML. The first covers the core material, including well-formed syntax, data modeling, and the Document Object Model (DOM)--a critical programming interface to XML documents. The other two threads cover the most common usages of XML: as a data format and transport mechanism, and as a visual presentation language for human interaction.