xHTML is a programming language that is used to provide information services to portable wireless devices. This book explains how and why companies use xHTML to develop and provide information services to mobile communication devices. xHTML protocols and scripts are used to create web pages that can efficiently and reliably communicate with mobile communication devices.. This book explains what is xHTML Basic, when to use it, and why it is important to learn. You will discover how the xHTML Basic language was developed and the types of applications that benefit from xHTML Basic programs. The basic programming structure of xHTML Basic is described along with the basic commands including links, images, and special symbols that are used. An introduction to scripting is included and how to create advanced services and features using xHTML Basic programming. You will learn the similarities and difference of xHTML Basic to other communication languages including WML and HTML. You will also learn how to write and simulate xHTML Basic programs. Explained is the operation of WAP servers and how to publish xHTML Basic programs to servers to allow them to be accessed on the web. Also described is how xHTML Basic is being used and integrated with WML and WMLScript to ensure xHTML evolves to meet future communication needs.

XSLT Quickly is, quite obviously, for anyone who needs to learn XSLT quickly. This book has two main goals: to familiarize the reader with the portions of XSLT that he/she will use eighty per cent of the time, and to provide a "cookbook" approach to learning additional techniques as they are needed. Part One is a step-by-step tutorial that brings the reader up to speed on the basic concepts and document manipulation techniques necessary for the most common XSLT tasks. More importantly, it represents the foundation on which the understanding of everything in Part Two is built. Part Two is a cookbook--a task-oriented user's guide to various issues one may meet in tackling XSLT. This portion of the book is organized by the goals of XSLT tasks (converting elements to attributes, reading in multiple documents at once, etc.). This makes it far easier for readers who don't already know XSLT to quickly find the solutions to their stylesheet development problems. XSLT Quickly also includes a glossary, a quick reference section for XSLT syntax, and a quick reference for using the popular XSLT processors.

Referring to specific information inside an XML document is a little like finding a needle in a haystack: how do you differentiate the information you need from everything else? XPath and XPointer are two closely related languages that play a key role in XML processing by allowing developers to find these needles and manipulate embedded information. XPath describes a route for finding specific items by defining a path through the hierarchy of an XML document, abstracting only the information that's relevant for identifying the data. XPointer extends XPath to identify more complex parts of documents. The two technologies are critical for developers seeking needles in haystacks in various types of processing.

XPath and XPointer fills an essential need for XML developers by focusing directly on a critical topic that has been covered only briefly. Written by John Simpson, an author with considerable XML experience, the book offers practical knowledge of the two languages that underpin XML, XSLT and XLink. XPath and XPointer cuts through basic theory and provides real-world examples that you can use right away.

XML in Data Management is for IT managers and technical staff involved in the creation, administration, or maintenance of a data management infrastructure that includes XML. For most IT staff, XML is either just a buzzword that is ignored or a silver bullet to be used in every nook and cranny of their organization. The truth is in between the two. This book provides the guidance necessary for data managers to make measured decisions about XML within their organizations. Readers will understand the uses of XML, its component architecture, its strategic implications, and how these apply to data management.


* Takes a data-centric view of XML.
* Explains how, when, and why to apply XML to data management systems.
* Covers XML component architecture, data engineering, frameworks, metadata, legacy systems, and more.
* Discusses the various strengths and weaknesses of XML technologies in the context of organizational data management and integration.

If you need to create or use formal descriptions of XML vocabularies, the W3C's XML Schema offers a powerful set of tools for defining acceptable document structures and content. An alternative to DTDs as the way to describe and validate data in an XML environment, XML Schema enables developers to create precise descriptions with a richer set of datatypes?such as booleans, numbers, currencies, dates and times?that are essential for today?s applications.

Schemas are powerful, but that power comes with substantial complexity. This concise book explains the ins and outs of XML Schema, including design choices, best practices, and limitations. Particularly valuable are discussions of how the type structures fit with existing database and object-oriented program contexts. With XML Schema, you can define acceptable content models and annotate those models with additional type information, making them more readily bound to programs and objects. Schemas combine the easy interchange of text-based XML with the more stringent requirements of data exchange, and make it easier to validate documents based on namespaces.