Joint child relationships Some attributes exist at the intersection of other indirectly related attributes. Such attributes are called joint children. Joint child relationships connect special attributes that are sometimes called cross-dimensional attributes, text facts, or qualities. They do not fit neatly into the modeling schemes you have learned about thus far. These relationships can be modeled and conceptualized like traditional attributes but, like facts, they exist at the intersection of multiple attribute levels. Many source systems refer to these special attributes as flags. Therefore, if flags are referenced in your source system documentation, these are likely candidates for joint child relationships. Joint child relationships are really another type of many-to-many relationship where one attribute has a many-to-many relationship to two otherwise unrelated attributes. For example, consider the relationship between three attributes: Promotion, Ite...
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