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J2EE™ Web Services by Richard Monson-Haefel

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Chapter 3. The W3C XML Schema Language

SOAP, WSDL, and UDDI are markup languages defined using the W3C XML Schema Language, so understanding the latter is critical to understanding J2EE Web Services. This chapter will provide you with a good understanding of both W3C XML Schema Language basics and, optionally, advanced concepts, so that you are ready to learn about SOAP, WSDL, and the UDDI standards covered later.

Throughout this chapter the term XML schema will be used to refer to the W3C XML Schema Language as a technology, while the word schema by itself will refer to a specific XML schema document.

XML Schema Basics

The XML specification includes the Document Type Definition (DTD), which can be used to describe XML markup languages and to validate ...

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