Chapter 4XML and Web Services Fundamentals
Part I of this book introduced St. Matthews (our business case), the key concepts and objectives for Service-Oriented Architecture, the industry standards, and the Oracle product portfolio for implementing SOA. At the end of Chapter 3, we installed the SOA Suite and got our first SOA application running by publishing the obligatory HelloWorld Web Service.
Before we start developing much more complex SOA applications, we need to establish a little foundation, consisting of XML, XSD, and WSDL. Of course, XML is the lingua franca for all messages and most contracts, definitions, configurations, and even programs in our service-oriented world. XSD (XML Schema Definition) is the data-modeling language for ...
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