Subject Area Folders
Each subject area may have fact folders and dimension folders. Folders may have subfolders.
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Fact folders contain attributes that can be measured, meaning that they're numeric values.
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Dimension folders may hold attribute columns or hierarchy columns.
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An attribute represents a piece of information about an object. Values may be dates, IDs, or text.
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A hierarchy contains values with parent-child relationships. Only Perspective folders provide hierarchy columns.
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