concept_ancestor
Vocabulary Tables
Table Columns
| field | type | required | phi | phi scrubbing operation |
|---|---|---|---|---|
| ancestor_concept_id | INTEGER | Yes | ||
| descendant_concept_id | INTEGER | Yes | ||
| min_levels_of_separation | INTEGER | Yes | ||
| max_levels_of_separation | INTEGER | Yes |
Columns Description
ancestor_concept_id
A foreign key to the concept in the concept table for the higher-level concept that forms the ancestor in the relationship.
descendant_concept_id
A foreign key to the concept in the concept table for the lower-level concept that forms the descendant in the relationship.
min_levels_of_separation
The minimum separation in number of levels of hierarchy between ancestor and descendant concepts. This is an attribute that is used to simplify hierarchic analysis.
max_levels_of_separation
The maximum separation in number of levels of hierarchy between ancestor and descendant concepts. This is an attribute that is used to simplify hierarchic analysis.