20.2. XML and .NET
Because of its extensible nature, XML can be used for a variety of purposes. Modern applications use XML as a messaging protocol, as a transport protocol, and even for backend data storage. The .NET platform uses XML as its key technology in ASP.NET, Web services, and so on. The .NET Framework XML classes are also tightly coupled with Managed Data Access (ADO.NET). Traditionally, there have always been different programming models for working with relational versus hierarchical data. The .NET platform, however, allows for transparent translation of relational data to XML and vice versa. This makes it possible to retrieve a relational ADO.NET dataset and walk it using the DOM, query or navigate it using XPath 1.0, and transform ...
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