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XQuery: The XML Query Language View Larger Image | Michael Brundage
Addison-Wesley, Paperback, Published February 2004, 505 pages, ISBN 0321165810 | List Price: $59.99
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From corporate IT departments to academic institutions, XML has become the
language of choice for storing and transmitting data across diverse application
domains. XQuery, an XML Query Language invented by the World Wide Web Consortium,
offers a powerful, standardized way to query all of that XML-encapsulated information.
With its ability to integrate XML and non-XML data, XQuery seems poised to do
for XML what SQL has done for relational data.
Written by the Technical Lead for XML query processing at Microsoft, XQuery:
The XML Query Language is an invaluable resource for XQuery novices
and experts alike. For those new to XQuery, this example-rich text serves as
a tutorial that brings readers quickly up to speed on XQuery's data model, type
system, and core language features. More experienced XML and database developers
will find an excellent reference on the nuances of various expressions, as well
as a guide to using XQuery to accomplish specific tasks.
Drawing on his experiences using XQuery, Michael Brundage offers an objective,
inside look at this emerging technology. His unique perspective translates into
an accessible and authoritative guide for readers using XML for documents, Web
services, or databases.
Key coverage includes:
Data model and type system
Path navigation
Iteration, construction, arithmetic, text processing, type operators and
user-defined functions
Information beyond the standard—such as a look at update languages,
performance benchmarks, query optimization, XQuery style, and much, much more
Hundreds of examples
The future of XQuery
The appendixes provide in-depth information on XQuery's type system, core expressions,
built-in functions, regular expressions, and grammar. Meanwhile, the companion
Web site offers downloadable source code for all of the examples in the book,
the latest on the XQuery standard, answers to readers' questions, XQuery tips
and strategies, and more.
XQuery will show developers, programmers, and database administrators
how a single line of this deep and powerful new language can accomplish the
equivalent of hundreds of lines written in C, C#, Java, and other general-purpose
programming languages.
Table of Contents
Preface.
I. FOUNDATIONS.
1. A Tour of XQuery.
Introduction.
Getting Started.
Notational Conventions.
Why XQuery?
Documents and Databases.
Typed and Untyped Data.
A Sample Query.
Processing Model.
Comments and Whitespace.
Prolog.
Constants.
XML.
Built-in Functions.
Operators.
Paths.
Variables.
FLWOR.
Error Handling.
Conclusion.
Further Reading.
2. Data Model and Type System.
Introduction.
An Overview of XML Data Models.
Structure of the XQuery Data Model.
Atomic Types.
Node Kinds.
Common Type Conversions.
Conclusion.
Further Reading.
3. Navigation.
Introduction.
Paths.
Navigation Functions.
Navigation Context.
Navigation Examples.
Navigation Complexities.
Conclusion.
Further Reading.
4. Functions and Modules.
Introduction.
Built-in Function Library.
Function invocation.
User-defined Functions.
Recursion.
External Functions.
Modules.
Conclusion.
II. CORE LANGUAGE FEATURES.
5. Basic Expressions.
Introduction.
Comparisons.
Sequences.
Arithmetic.
Logic.
Query Prolog.
Conclusion.
Further Reading.
6. Iteration.
Introduction.
FLWOR.
Quantification.
Joins.
Comparing Sequences.
Sorting.
Grouping.
Conclusion.
Further Reading.
7. Construction.
Introduction.
Element Nodes.
Attribute Nodes.
Text Nodes.
Document Nodes.
Comment Nodes.
Processing Instruction Nodes.
Namespace Nodes.
Composition.
Validation.
Element and Attribute Content.
Conclusion.
Further Reading.
8. Text Processing.
Introduction.
The XML Character Model.
Character Encodings.
Collations.
Text Operators.
Text Functions.
Conclusion.
Further Reading.
9. Type Operators.
Introduction.
Cast and Castable.
Type Conversion Rules.
Treat As.
Instance Of and Typeswitch.
User-defined types.
Conclusion.
Further Reading.
III. APPLICATION.
10. Practical Examples.
Introduction.
Style.
Idioms.
Conclusion.
Further Reading.
11. Surprises.
Introduction.
Confusion Over Meaning.
Confusion Over Syntax.
Conclusion.
12. XQuery Serialization.
Introduction.
Data Model Serialization.
Query Serialization.
Conclusion.
13. Query Optimization.
Introduction.
Common Query Optimizations.
Barriers to Optimization.
Formal Semantics.
Conclusion.
Further Reading.
14. Beyond the Standard.
Introduction.
Potential Changes.
Standards Roadmap.
Xquery 1.1.
Data Manipulation (DML).
Full-text Search 313.
Performance Benchmarks.
Conclusion.
Further Reading.
IV. REFERENCE.
Appendix A: Data Model and Type System Reference.
Summary.
Node Kinds.
Atomic Types.
Primitive Type Conversions.
Built-in Atomic Types.
Appendix B: Expression Reference.
Appendix C: Function Reference.
Appendix D: Regular Expression Reference.
Overview.
Advanced Regexps.
Regexp Language.
Character Properties.
Appendix E: Grammar.
XQuery Grammar.
Reserved Keywords.
Operator Precedence.
Bibliography.
Further Reading.
Index.
About the Author
Michael Brundage, the Technical Lead for XML query processing at Microsoft,
designed the architecture for Microsoft's .NET Common Query Runtime and implemented
the XML query optimizer for XPath, XSLT, and XQuery. He also implemented XPath
over XML Views in SQL Server 2000, and has several patents and publications
on XML query processing. Previously, he was a Senior Software Engineer at
Caltech and NASA's Interferometry Science Center, where he worked on projects
such as AstroVR and the search for extrasolar planets.
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