Columns
| Column | Type | Size | Nulls | Auto | Default | Children | Parents | Comments |
|---|---|---|---|---|---|---|---|---|
| concept_id_1 | Unknown | 0 | null |
|
|
concept identifier 1 |
||
| concept_id_2 | Unknown | 0 | null |
|
|
concept identifier 2 |
||
| invalid_reason | Unknown | 0 | null |
|
|
reason relationship is no longer valid |
||
| relationship_id | Unknown | 0 | null |
|
|
relationship identifier |
||
| valid_end_date | Unknown | 0 | null |
|
|
period of validity end |
||
| valid_start_date | Unknown | 0 | null |
|
|
period of validity start |