In part 1, we saw user defined hierarchies. For parent child hierarchy, we can use Unary Operator Column. Let’s take the same example from Part1. We have a simple cube with two dimensions called DimCompany and DimCategory, and only one measure called Sales. DimCategory table looks like this: Id    CategoryItems        Parent 1        Phone                            4 2         Tab                               4 … More Leaf members do not sum up to parent – Part 2 (parent child hierarchy)