Astah Professional supports ER (Entity-Relationship) diagrams.
ER Data Type
How to add/customize ER Data Type
This preset of ER Data Types may not cover all the types in the RDBMS, so when you need one which is not listed, you can add one by yourself with the step below.
(1) Go to [Tool] – [ER Diagram] – [Set ER Data Type] or select it from [ER Model] packages menu.
You can try out Astah Professional for free for 50 days to create ER Diagrams!