Hui Zhang

The momentum behind Web services is building. If you haven't heard about them by now, you've probably been living in a jungle or some remote area for the last few years. The underlying technologies of Web services are XML, HTTP, SOAP, WSDL, and UDDI. XML provides an open standard for data exchange, HTTP an open transport protocol, SOAP a remote method invocation protocol, WSDL the service description language, and UDDI a service discovery and registry. The next logical step might be creating a means to investigate and query the information available. Interestingly, Web services provides both a means for remote querying and a reason to need an XML database. As Web services grow in popularity, more and more XML content will be generated, all with a need to be managed. This article describes how to use SOAP and XML query techniques to manage the XML data stored in remot... (more)