namespace

A named set of objects. A namespace is simply a logical "area" that holds hierarchical groupings of objects. For example, servers, tags, or topics. There are three namespaces defined in the Historian server: the system namespace, the public namespace, and the private namespace. The hierarchical contents of a namespace are exposed in the browser of a client application. In the historian, the definition for what is included in a namespace is controlled by internal stored procedures. See also system namespace, public namespace, private namespace, browser, stored procedures.