Nodes

When a content reference is created to register some content (that is, a URL) the specific URI (that is, the scheme, Web server, and so on) can be specified in the content reference. However, this has the drawback that every time the URI for a content reference changes (the Web server name changes, and so on), the content reference must be changed. Nodes are a way to create a logical name for a specific Web server, scheme, and so on. When the content reference is created you can specify a node name.

For example, suppose the name of a Web server changed. If you don't use nodes, you must check all your content references and change them accordingly. If you use nodes, you have to change only the Web server name in one place, and all the content references that use that node now automatically reference the correct Web server.

Nodes can be optional for content where the specified URL is already a complete URL, such as for external content. Nodes can be categorized as:

• default local

• local

• non-local (remote)