The R-Hierarchy sheet maps parent and child relationships between folders in the Catalog hierarchy. For example, in the Equipment.xls workbook, one of the parents is CatalogRoot. The child associated with CatalogRoot is RefDataEquipmentRoot.
These folder names are object names, not names that appear on the user interface. These names must be unique in the Catalog.
A parent folder can have any number of children. However, a child folder can only have one parent. A familiar example is the hierarchy of folders in Windows Explorer.
RelationSource
Specifies the parent object names.
RelationDestination
Specifies the children object names.
The R-Hierarchy sheet specifies relationships between all parent and children folders, except part classes and the classification folders right above the part classes in the hierarchy. These folders are related on the R- ClassNodeDescribes sheet.