| D_Comment |
| Logical Entity Name | D_Comment |
| Default Table Name | D_Comment |
| Definition | Comment dictionary |
| D_Comment Columns |
| ColumnName | Domain | Datatype | NULL | Definition |
id |
NUMBER(8, 0) | NO | A cross reference code to indicate this particular dictionary entry | |
| class | VARCHAR2(1) | NO | A single letter that determines to what the code refers | |
| description | VARCHAR2(70) | YES | This is a description of a comment | |
| unit | NUMBER(8, 0) | NO | Units of comment level |
| D_Comment Primary and Unique Keys |
| Key Name | Key Type | Keys |
| D_C00 | PrimaryKey | id |
| D_Comment Foreign Keys |
| Parent Relationships: |
| Table Name | Type | Cardinality | Constraint Name | VerbPhrase | InversePhrase | Foreign Keys | Is Supertype | Deferrable | Initially Deferred |
| Child Relationships: |
| Table Name | Type | Cardinality | Constraint Name | VerbPhrase | InversePhrase | Foreign Keys | Is Subtype | Deferrable | Initially Deferred |
| Channel_Comment | Identifying | One To Zero or More | Cha_Com_D_Com | NO | NO | NO | |||
| Station_Comment | Identifying | One To Zero or More | Sta_Com_D_Com | NO | NO | NO |
| D_Comment Check Constraints |
| Check Constraint Name | CheckConstraint |