Wait, so the variable has to be a hierarchy? That's a bit of a head-scratcher. I'm just going to guess A and B and hope for the best. Hierarchy schmierarchy, am I right?
Hmm, I'm not sure about C and D. Wouldn't the reference column need to be the top-level or parent attribute for the hierarchy to be meaningful? Just my two cents.
Definitely A and B. The question is asking about defining a variable that presents its value hierarchically, and those two options seem to fit the bill.
I think A and B are the correct answers. Creating a level hierarchy or a parent-child hierarchy and assigning it to the variable with the top-level or parent attribute as the reference column seems like the right way to define a variable that presents its value hierarchically.
Yes, that's correct. A level hierarchy with the top level as the reference column or a parent-child hierarchy with the parent attribute as the reference column both help present the value hierarchically.
I think both Option A and Option B are correct. Creating a level hierarchy and assigning it to the variable, with the reference column as the top level, would also work.
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