Hierarchies have
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One to One relationship
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Many to One Relatioship
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Many to Many Relationship
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None
Reveal answer
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B
Correct answer
Explanation
In Essbase hierarchies, multiple child members roll up into a single parent member, creating a many-to-one relationship from bottom to top. For example, multiple product-level members aggregate into one category member, and multiple categories further aggregate into a total product member.
AI explanation
In a dimensional hierarchy (like in Essbase or OLAP modeling), each child member rolls up to exactly one parent member, while a parent can have many children — this is the defining many-to-one relationship of a hierarchy. This is what allows aggregation to work cleanly: values roll up unambiguously from children to a single parent at each level.