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In this example, you created a user hierarchy easily with just a few drag-and-drops. The hierarchy of this example is created from one table. Creating hierarchies from multiple related tables is as simple as creating a hierarchy from a single table; you just need to import attributes from the Data Source View pane into the attributes area and you can then create a hierarchy based on the attributes.

You also saw that after creating Product Category Hierarchy, we set the visibility of the attributes to false. As the user can access the Product Category, Subcategory, and Product attributes through Product Category Hierarchy, there is no need to have separate attributes. Making them invisible from the user's perspective will reduce the user's confusion with regards to too many attributes.