Originally posted by Bjarki Holm:
yes, there's a chapter or two on XML. Additionally, there is a detailed case study of an enterprise (fictious) web portal that communicates with a set of heterogenous content provides over the network with XML. The remote content providers provide, upon request from the web portal, content (articles, news, etc.) in XML format (retrieved from a database), and transport it using different methods of remote communications (HTTP, XML-RPC). This might interest you.