Sistemas

Web services enable the new generation of Internet-based applications. These services support application-to-application Internet communication that is; applications at different network locations can be integrated to function as if they part of a single, large software system. Examples of applications made possible by Web services include automated business transactions and direct (non browser) desktop and handheld device access to reservations, stock trading, and order-tracking systems. Several key standards have emerged that together form foundation for Web services: XML (Extensible Markup Language), WSDL (Web Service Definition Language), SOAP (Simple Object Access Protocol), and UDDI (Universal Description, Discovery, and Integration). In addition, ebXML (Electronic Business XML) has been specified to facilitate automated business process integration among trading partners. This book introduces the main ideas and concepts behind core and extended Web services technologies and provides developers with a primer for each of the major technologies that have emerged in this space. An addition, Understanding Web Services summarizes the major architectural approaches to web services, examines the role of Web services within the .NET and J2EE communities, and provides information about major product offerings from BEA, Hewlett-Packard, IBM, IONA, Microsoft, Oracle, Sun Microsystems, and others.