| Name | Description | Type | Package | Framework |
| DBRelation | This class creates a DBReferene object for a foreing key relation. | Class | org.apache.empire.db | Apache Empire DB |
| DBRelation .DBCascadeAction | DBCascadeAction enum This enum specifies options for a relation when deleting records | Class | org.apache.empire.db.DBRelation | Apache Empire DB |
| DBRelation .DBReference | Class | org.apache.empire.db.DBRelation | Apache Empire DB | |