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Query: Excellent Book On XML and XQuery

Querying XML is the 800 page reference book I will now keep next to my keyboard for all things XQuery, XPath, and XML. The book has a nice and non-academic approach to learning XML and using the XML Query language (XQuery) to build application software. The book starts with data concepts and then gives in-depth explanations of the tools, APIs, and libraries available to work with the data. I wish the book covered XML-based application development frameworks and developer tools. Perhaps they steered clear of those topics to make this a book whose content will be valid and useful for years. -Frank