If your business? S development projects adhere to the principles of SOA, the result will be an inventory of modular units called "services," which allows for quick response to change. This book tells the SOA story in a way, a simple direct that will help you not only understand the terms and benefits, but also the technologies that underlie SOA: XML, WSDL, SOAP, XPath, BPEL, SCA, and SDO. Provide a detailed description of the Extensible Markup Language (XML), including namespaces and XML schema. ? Explaining the Web Services Definition Language (WSDL) and SOAP, the standard SOA technologies. ? Gives a clear tutorial on XML Path Language (XPath), language to reduce the data from the messages sent and other sources. Introducing Service Data Objects (SDO), a proposed standard for representing data in a way, even if the data comes from various types of data sources.