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Hierarchical Generation

Two members of a hierarchy have the same generation if they have the same number of ancestors leading to the top. For example, the top member of a dimension is from Generation 1. There may be two or more members in Generation 1 if there are multiple hierarchies in the dimension.
NOTE: The terms generation and level are both necessary to describe sub-groups of dimension members, since, for example, although two siblings share the same parent and are therefore of the same generation, they won't be from the same level if one of the siblings has a child and the other doesn't.
Synonyms: Peer, Sibling

Related Terms: Level, Hierarchical Relationships, Parent, Children

from OLAP Glossary, 1995

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