What is Hierarchical Taxonomy?
Hierarchical Taxonomy is a structure in which the taxons are organized hierarchically. Each Taxon could have one parent Taxon and unlimited number of child Taxa.
Sitefinity provides API for working with Flat Taxonomies. The following namespaces should be used when working with Taxonomies via code:
Hierarchical Taxonomy and Categories
The Categories feature in Sitefinity is implemented on top of the Hierarchical Taxonomy concept:
Figure 1:Categories implemented as Hierarchical Taxonomy