1. A method in a content management system for representing in a relational format content units arranged in a hierarchical order, comprising: providing a first table comprising a column indicative of nodes corresponding to the structure of the hierarchical order; providing a second table comprising a column indicative of edges corresponding to the arrangement of the structure of the hierarchical order; relating the first table to the second table such that the structure of the hierarchical content can be derived therefrom; and storing the content units and storing information indicative of the location of the storage of the content units.