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XQuery, by Priscilla Walmsley
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With the XQuery 1.0 standard, you finally have a tool that will make it much easier to search, extract and manipulate information from XML content stored in databases. This in-depth tutorial not only walks you through the XQuery specification, but also teaches you how to program with this widely anticipated query language.
XQuery is for query writers who have some knowledge of XML basics, but not necessarily advanced knowledge of XML-related technologies. It can be used both as a tutorial, by reading cover to cover, and as a reference, by using the comprehensive index and appendixes. Either way, you will find the background knowledge in namespaces, schemas, built-in types and regular expressions that is relevant to writing XML queries. This book provides:
- A high-level overview and quick tour of XQuery
- Information to write sophisticated queries, without being bogged down by the details of types, namespaces, and schemas
- Advanced concepts for users who want to take advantage of modularity, namespaces, typing and schemas
- Guidelines for working with specific types of data, such as numbers, strings, dates, URIs and processing instructions
- A complete alphabetical reference to the built-in functions and types
You will also learn about XQuery's support for filtering, sorting, and grouping data, as well as how to use FLWOR expressions, XPath, and XQuery tools for extracting and combining information. With this book, you will discover how to apply all of these tools to a wide variety of data sources, and how to recombine information from multiple sources into a single final output result.
Whether you're coming from SQL, XSLT, or starting from scratch, this carefully paced tutorial takes you through the final 1.0 standard in detail.
- Sales Rank: #1027375 in Books
- Brand: Brand: O'Reilly Media
- Published on: 2007-04-06
- Released on: 2007-04-06
- Original language: English
- Number of items: 1
- Dimensions: 9.10" h x 1.20" w x 7.00" l, 1.75 pounds
- Binding: Paperback
- 512 pages
- ISBN13: 9780596006341
- Condition: New
- Notes: BRAND NEW FROM PUBLISHER! 100% Satisfaction Guarantee. Tracking provided on most orders. Buy with Confidence! Millions of books sold!
About the Author
Priscilla Walmsley serves as Managing Director of Datypic, a consultancy specializing in XML architecture and design, SOA and Web services implementation, and content management. She is the author of Definitive XML Schema (Prentice Hall), as well as XQuery (O'Reilly Media). She also co-authored Web Service Contract Design and Versioning for SOA (Prentice Hall).
Most helpful customer reviews
4 of 7 people found the following review helpful.
decent and worth having... but nothing more
By J. Brutto
I did find this book extremely useful and have used it as my definitive reference for XQuery while working with real-world problems. The book was not only informative, comprehensive and filled with useful and easy to follow examples, but also realistic. You will find that any of the basic questions you have can be answered somewhere in this book (of course advanced questions often rely on the specific implementation, which is out of scope for the book and I recommend you hit online resources for those).
I do recommend reading/buying/using this book in your day-to-day work with XML in cooperation with an XQuery implementation. It's a little dry of information for advanced readers, but novice to intermediate readers will find it amazingly helpful.
However... this book has one major shortcoming: it is horribly written and organized.
The book seems to be written in a manner where the author knew exactly what they were talking about but didn't take the time to organize it or write a second and third draft. It feels like a "once-and-done" text and is inconsistent with coverage between all the various topics (for example: the structure of simple path queries is discussed sporadically while simple work with sorting and grouping is gone into a level of overkill in detail).
Good book to have on your shelf (just like the little SQL, Vi, Regex, etc. booklets we all have), but you've definitely got to break out the PostIt Notes to make sure you can find the information throughout the book.
It definitely needs more information here and there, but it's a great place to (at the least) start off and look for basic information.
19 of 20 people found the following review helpful.
Best XQuery book available to date!
By Amazon Customer
I've had this XQuery book for about a week now and it has already helped me immensely! Priscilla Walmsley (who was a member of the W3C XML Schema Working Group and I believe the XQuery Working Group as well) is an excellent writer and teacher. Her writing style is clear and concise, as anyone who read her earlier Definitive XML Schema book already knows.
"XQuery" is roughly 2/3 tutorial and 1/3 reference (by page counts). The tutorial material is thoughtfully divided into 25 bite-size chapters. The topics progress nicely from an overview and basics to important concepts such as namespace handlng, modules and static typing. The book includes 5 chapters that focus on handling specific data types (e.g, "Working with Strings"). You don't have to know XSLT but knowing XPath may be helpful. OTOH, XPath is covered in Chap. 4. There is even a chapter targeted at SQL users. I also appreciate the carefully chosen running example that is representative of many XML structures. The book also benefits from special icons indicating tips, gotchas, and compatibility issues. Longtime XML geek Simon St.Laurent was the O'Reilly editor, which is another big plus.
Walmsley has also created an incredibly useful reference site of XQuery functions, both those defined by the W3C specs and numerous others that she wrote. Others may contribute as well. [...]
I have several older XQuery books by various publishers but this book is by far the best. I highly recommend it to web developers, database developers, and data architects with even a modest XML background.
9 of 10 people found the following review helpful.
First Impressions
By Marshal Dillon
My first impression of this book is that it is fantastic. Just flip through the first chapter and you'll see references to code snippets and valuable explanations of XQuery. This book is what I was seeking. The author knows the reader has an interest in the subject and does not waste time explaining what XML is and why one would want to query it etc. This book is not selling the technology. It teaches it which is a lesson the author of "Querying XML" could learn from.
I am very happy thus far with this book.
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