Main Page | See live article | Alphabetical index The asymmetrical relationship that defines a hierarchy. This can be for instance an authority relationship, a parent-child relationship, a containment relationship, or a part-to-whole relationship. The relationship conventionally has a direction that is labelled as upward and goes from a member labelled as immediate subordinate to another which is its immediate superior. Generalizations: asymmetrical relationship Specializations: None yet Involved in: Hierarchy Primary Domain: Interdisciplinarity Other Potential Examples: This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.