The config.xml file is an XML document that describes the configuration of an entire WebLogic Server domain. The config.dtd Document Type Definition (DTD) describes the content and structure of the config.xml file. The DTD describes the valid XML tags, the tag order, whether the tags are optional, the type of data contained within the tags, the tag attributes, the attribute values, and so on.
The config.xml file consists of a series of XML elements. The Domain element is the top-level element, and all elements in the Domain are children of the Domain element. The Domain element includes child elements, such as the Server, Cluster, and Application elements. These child elements may have children themselves.
Configuration settings in ASP.NET are stored in XML files that you can easily read and edit. You can also easily copy these to another server, along with the other files that comprise your application.