In Astah Professional, you can convert your UML models to ER models and turn your Class diagrams to ER diagrams with one-click!


Convert Class diagram to ER diagram

You can convert your UML Class diagram into ER diagram with one-click.

  1. Select [Convert to ER Diagram] from the Class diagram’s pop-up menu in the tree view.
  2. Now the ER diagram will be created and appears in the tree.
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Convert rules

Compositions to Identifying Relationship

Any composition relationships will be converted to Identifying-Relationship.



Associations to Identifying relationship

In order to convert association to Identifying relationship, Add “identifying” stereotype to the association and let it have “one-to-many” multiplicity.


Associations to Non-Identifying Relationship

In order to convert an association to a Non-Identifying relationship, add “Non-identifying” stereotype to the association and let it have “one-to-many” multiplicity.


Convert UML models to ERD models

In Astah Professional, you can convert all the UML models to ER models all at once instead of converting per diagram.

  1. Go to [Tools] – [ER Diagram] – [Convert UML Model to ER Model].
  2. Select which UML models to convert to ER models and click [OK].