| epochtimebase |
| Logical Entity Name | epochtimebase |
| Default Table Name | epochtimebase |
| Definition | Table used by TRUETIME package to say if time is nominal or UTC |
| epochtimebase Attributes |
| Attribute/Logical Rolename | Domain | Datatype | NULL | Definition |
| base |
VARCHAR(1) | NO | ||
| ondate |
DATE | NO | ||
| offdate | DATE | YES |
| epochtimebase Keys |
| Key Name | Key Type | Keys |
| PK5 | PrimaryKey | base, ondate |
| epochtimebase Relationships |
| Parent Relationships: |
| Entity Name | Type | Cardinality | Business Name | VerbPhrase | InversePhrase | Foreign Keys | Is Supertype |
| Child Relationships: |
| Entity Name | Type | Cardinality | Business Name | VerbPhrase | InversePhrase | Foreign Keys | Is Subtype |
| epochtimebase Check Constraints |
| Check Constraint Name | CheckConstraint |
| timebasechk | base IN ('T','N') |