Chapter 3 Building Conceptual and Logical Diagrams
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. |
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