Migrations are made instantaneously in an LDM or during generation if you generate a PDM from a CDM.
| Relationship type | Migration | 
|---|---|
| Dependent one-to-many | Foreign identifiers become attributes of the primary identifier of the child entity. | 
| Many-to-many | No attributes are migrated. | 
| Dominant one-to-one | Primary identifier migrate from the dominant attribute. | 
| Mandatory one-to-many | If the child to parent role is mandatory, migrated attributes are mandatory. |