The Object Type hierarchy defines the relationship (parent - child) between the Object Types. The Object Type hierarchy will also specify the possible depth of a Product or a Classification hierarchy, for example, the number of possible 'levels' before you reach an Object Type with no 'child' Object Type.
Child nodes of such Object Types are also referred to as 'leaf' nodes in the hierarchies.
The unique structure of each Product or Classification hierarchy is defined by an Object Type hierarchy.
Note: It is important to understand that the construction of the Object Type hierarchies is primarily a one-time setup operation. Once the Object Type hierarchies are established, any changes must be thoughtfully considered as such changes may have serious effects on your global database structure.
The 'labeling' of each node in a Product or Classification hierarchy with a specific Object Type is also used to group a set of nodes that share similar characteristics.
The Object Type hierarchies can be recursive, meaning that a 'child' can be its own 'parent'. This allows further division of the same types of objects within a single folder. In this case, there is no limit to the depth of a Product or Classification hierarchy that includes nodes from such a recursive Object Type hierarchy. To make an Object Type recursive, on the References tab, add the Object Type as its own parent.
