In Astah Professional, you can convert ER diagrams to Class diagrams.

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Convert ER diagram to Class diagram

  1. Select [Convert to Class Diagram] from ER Diagram’s pop-up menu in the structure tree.
  2. The diagram and all the model elements inside will be converted to a Class diagram and appears in the tree view.
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Convert ER models to UML models

In Astah Professional, instead of converting ER diagram to Class diagram one by one, you can convert multiple-diagrams and models all at once.

  1. Go to [Tools] – [ER Diagrams] – [Convert ER Model to UML Model].
  2. Select which ER models you want to convert.
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Convert Rule

ERD data type would be converted as below. Other data types will be converted to String.

ER Data Type
Convert to
INT
int
BIT
boolean
NUMERIC
int
CHAR
char or String (It will convert to char if its Length/Precision is none or 1.)
DOUBLE_PRECISION
double
FLOAT
float