Early Adopter Xqueryby CAGLE, Rogerio Saran, Nalleli Lopez, Mark Fussell, Kurt Cagle
Working it's way towards W3C Recommendation status sometime in 2002, the XQuery language and associated specifications are the biggest project to date from the World Wide Web Consortium since it ratified XML in 1998. XQuery is to XML data as SQL is to data in relational databases and more - a single syntax that allows us to specify queries on structured XML data, independent of how and on what platform it is stored, and return the results as XML in a structure of your choosing. It is also one of the first large scale attempts to get the various W3C specifications in line with each other, uniting the XSL, XQuery, and XML Schema working groups in its creation.
Early Adopter XQuery presents the facts about this ambitious new technology, covering its history and development to date, and what changes might occur in the future before it is ratified. We present easy-to-follow introductions to the XQuery language for those already familiar with SQL and XSLT that others can follow too and a look at the early implementations of XQuery that exist around the internet. In particular, we look at .NET and Java classes which you can use to incorporate XQuery into your own work and a basic case study demonstrating how to build your own XQuery engine.
What does this book cover?
The History of XQuery, its predecessors and how to work with the current set of XQuery documents
The XQuery Data Model, Formal Semantics and Use Cases
XQuery from a SQL perspective
XQuery from an XSLT/XML perspective
The current set of XQuery implementations available today, in particular Microsoft's .NET classes for XQuery and FatDog's Java implementation
How to set about building your own XQuery engine
This book is for database and XML developers, preferably with a knowledge of SQL or XSLT, who want to get familiar with and keep track of what will be an industry standard once complete. This book was written against the Summer 2001 working drafts but the generic nature of the book means that it should be valid through to Recommendation status. XQuery is platform-independent and we have reflected this in the book by not limiting our discussions to any one operating system.
Author Biography: Daniel Maharry currently lives in Birmingham where he has worked for Wrox Press - both there and in India - for three and a half years as an itinerant editor and diarist with a penchant for the obscure topics. With any luck, this tome will see him starting to come out of that particular malaise. At some point, he will take the under construction sign off hmobius.com and put something there of note.
Kurt Cagle is an author and developer with Cagle Communications, specializing in XML web technologies, open source, and computational ethics. He is the author or co-author of more than twelve books covering XML and XSLT, SVG, multimedia and web programming, and is a regular columnist for XML Magazine.
Nalleli (pronounced Nah-yéh-lee) holds a degree in Business and Economics from Wheaton College and is currently completing a Masters of Science in Software Engineering at DePaul University in Chicago, IL. She speaks three languages and has traveled extensively.
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