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

We used DBVisualizer for that.

Description: The references graph is a great feature as it automatically renders all primary/foreign key mappings (also called referential integrity constraints) in a graph style. The table nodes and relations are layed out automatically, with a number of layout modes available. The resulting graph is unique as it displays all information in an optimal and readable layout. from its site