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In parallel path dimensional hierarchy system:
- Each level in the tree can have more than one possible parent level AND
- Each instance can belong to more than one instance in the parent dimension level AND
- Criteria for analysis is different
Sales office—>direct sales Channel Area—>direct sales channel sector—>Direct sales Channel Zone—> Sales Region (Sales organization dimension)
Sales Office—>city—>district—> state—> country (Location Dimension)
If you look at the example, sales office level belongs to two different parent level dimensions (Direct sales channel area and city), the instance of an office (say Sydney harbor office) belong to two different instances (Sydney west sales area and Sydney city) and also different criteria for analysis (sales organization and location).
Essentially the difference between the parallel and multiple hierarchy is on the criteria for analysis.
A parallel hierarchy can be a dependent hierarchy - whereby the paths could be sharing the same levels like the following:
Sales office—>direct sales Channel Area—>direct sales channel sector—>Direct sales Channel Zone—> Sales Region—> Country (Sales Organization Dimension)
Sales Office—>city—>district—> state—> country (Location Dimension)
In the above example, you will have the 'country Level' being shared. Country (like sales office) is also appearing as an instance in two different dimensions
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