XML Schema Definition (XSD)
by Vijay Mukhi, Shruti Gupta, Sonal Mukhi
The XML Schema specifies the properties of a resource, while the XML file stipulates a set of values for these properties. The primary utility of the XML Schema lies in its ability to concede generous amount of autonomy to the programmer to define the rules of data validity; and thereafter, to hand over the responsibility of data validation to the XML validator. This liberates the programmer from the mundane drudgery of the task of data validation.
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by Dan McCreary - Wikibooks
by Steve Holzner - Sams
The book offers real-world XML examples and covers basic syntax, XML document structure, document types, the benefits of XML Schema, formatting using CSS, working with XHTML, XForms, building XML into database or Web Service applications with SOAP.
by Ronald Bourret
This paper gives a high-level overview of how to use XML with databases. It describes how the differences between data-centric and document-centric documents affect their usage with databases and how XML is commonly used with relational databases.
by Micah Dubinko - O'Reilly
Introduction and practical guide to the new XForms specification. You'll learn how to integrate XForms with both HTML and XML vocabularies, and how XForms can simplify the connection between client-based user input and server-based processing.