As a developer new to Web Services, how do you make sense of this emerging framework so you can start writing your own services today? This concise book gives programmers both a concrete introduction and a handy reference to XML web services, first by explaining the foundations of this new breed of distributed services, and then by demonstrating quick ways to create services with open-source Java tools. Web Services make it possible for diverse applications to discover each other and exchange data seamlessly via the Internet. For instance, programs written in Java and running on Solaris can find and call code written in C# that run on Windows XP, or programs written in Perl that run on Linux, without any concern about the details of how that service is implemented. A common set of Web Services is at the core of Microsoft's new .NET strategy, Sun Microsystems's Sun One Platform, and the W3C's XML Protocol Activity Group. In this book, author Ethan Cerami explores four key emerging technologies: \* XML Remote Procedure Calls (XML-RPC) \* SOAP - The foundation for most commercial Web Services development \* Universal Discovery, Description and Integration (UDDI) \* Web Services Description Language (WSDL)For each of these topics, Web Services Essentials provides a quick overview, Java tutorials with sample code, samples of the XML documents underlying the service, and explanations of freely-available Java APIs. Cerami also includes a guide to the current state of Web Services, pointers to open-source tools and a comprehensive glossary of terms. If you want to break through the Web Services hype and find useful information on these evolving technologies, look no further than Web Services Essentials. As a developer new to Web Services, how do you make sense of this emerging framework so you can start writing your own services today? This concise book gives programmers both a concrete introduction and a handy reference to XML web services, first by explaining the foundations of this new breed of distributed services, and then by demonstrating quick ways to create services with open-source Java tools. Web Services make it possible for diverse applications to discover each other and exchange data seamlessly via the Internet. For instance, programs written in Java and running on Solaris can find and call code written in C# that run on Windows XP, or programs written in Perl that run on Linux, without any concern about the details of how that service is implemented. A common set of Web Services is at the core of Microsoft's new .NET strategy, Sun Microsystems's Sun One Platform, and the W3C's XML Protocol Activity Group. In this book, author Ethan Cerami explores four key emerging technologies: XML Remote Procedure Calls (XML-RPC) SOAP - The foundation for most commercial Web Services development Universal Discovery, Description and Integration (UDDI) Web Services Description Language (WSDL) For each of these topics, Web Services Essentials provides a quick overview, Java tutorials with sample code, samples of the XML documents underlying the service, and explanations of freely-available Java APIs. Cerami also includes a guide to the current state of Web Services, pointers to open-source tools and a comprehensive glossary of terms. If you want to break through the Web Services hype and find useful information on these evolving technologies, look no further than Web Services Essentials. As a developer new to Web Services, how do you make sense of this emerging framework so you can start writing your own services today? This concise book gives programmers both a concrete introduction and a handy reference to XML Web Services, first by explaining the foundations of this new breed of distributed services, and then by demonstrating quick ways to create services with open-source Java tools. The book explores four key emerging Web Services technologies:XML Remote Procedure Calls (XML-RPC)SOAP - The foundation for most commercial Web Services developmentUniversal Discovery, Description and Integration (UDDI)Web Services Description Language (WSDL)For each of these topics, Web Services Essentials provides a quick overview, Java tutorials with sample code, samples of the XML documents underlying the service, and explanations of freely-available Java APIs. The book also includes a guide to the current state of Web Services, pointers to open-source tools and a comprehensive glossary of terms. If you want to break through the Web Services hype and find useful information on these evolving technologies, look no further than Web Services Essentials. Pt. I. XML Concepts -- -- Ch. 1. Introducing XML -- -- Ch. 2. XML Fundamentals -- -- Ch. 3. Document Type Definitions -- -- Ch. 4. Namespaces -- -- Ch. 5. Internationalization -- -- Pt. II. Narrative-Centric Documents -- -- Ch. 6. XML as a Document Format -- -- Ch. 7. XML on the Web -- -- Ch. 8. XSL Transformations -- -- Ch. 9. XPath -- -- Ch. 10. XLinks -- -- Ch. 11. XPointers -- -- Ch. 12. Cascading Stylesheets (CSS) -- -- Ch. 13. XSL Formatting Objects (XSL-FO) -- -- Pt. III. Data-Centric Documents -- -- Ch. 14. XML as a Data Format -- -- Ch. 15. Programming Models -- -- Ch. 16. Document Object Model (DOM) -- -- Ch. 17. SAX -- -- Pt. IV. Reference -- -- Ch. 18. XML 1.0 Reference -- -- Ch. 19. XPath Reference -- -- Ch. 20. XSLT Reference -- -- Ch. 21. DOM Reference -- -- Ch. 22. SAX Reference -- -- Ch. 23. Character Sets. XML concepts: Introducing XML; XML fundamentals; Document type definitions; Namespaces; Internationalization. Narrative-Centric documents: XML as a document format; XML on the Web; XSL transformations; XPath; XLinks; XPointers; Cascading stylesheets (CSS); XSL formatting objects (XSL-FO). Data-Centric documents: XML as a Data format Programming models; Document object model (DOM); SAX. Reference: XML 1.0 reference; XPath reference; XPath reference; XSLT reference; DOM reference; SAX reference; Character sets; Index A comprehensive desktop reference to the fundamental rules that all XML documents and authors must adhere to. This book details the grammar that specifies where tags may be placed, what they must look like, which element names are legal, how attributes attach to elements, and much more. Provides an overview, Java tutorials with sample code, samples of the underlying XML documents, and explanations of freely-available Java APIs for XML Remote Procedure Calls, SOAP, UDDI, and WSDL. A reference to the fundamental rules of XML details tags, grammar, placement, element names, attributes, and syntax