How to get ERD diagram for an existing database?

Question

I have a PostgreSQL database. I want to get its ERD. How can I do so?

Answer 1

pgModeler can generate nice ER diagram from PostgreSQL databases.

• https://pgmodeler.io/
• License: GPLv3

It seems there is no manual, but it is easy enough without manual. It's QT application. AFAIK, Fedora and Ubuntu has package. (pgmodeler)

In the latest version of pgModeler (0.9.1) the trial version allows you to create ERD (the design button is not disabled). To do so:

1. Click Design button to first create an empty 'design model'
2. Then click on Import and connect to the server and database you want (unless you already set that up in Manage, in which case all your databases will be available to select in step 3)
3. Import all objects (it will warn that you are importing to the current model, which is fine since it is empty).
4. Now switch back to the Design tab to see your ERD.