DbVisualizer is a tool I have used in the past for exactly this.
// Matthias
On Wed, Nov 5, 2008 at 1:18 PM, Mohammad Ali Darvish Darab
<darvishdarab@gmail.com> wrote:
> Hello everybody,
>
> I have got an already existing Porstgres DB which is pretty large
> (including more than 650 table with considerable number of constraints
> etc). And now I am supposed to realize generally how it is constructed
> and works. I thought it would be good to have a grapahical
> visualization of whole DB (with tables and relations etc). Does anyone
> have any idea about any tool that does this? I would also appreciate
> any comments or suggestions that might help me in this regard.
>
> Thank you in advance,
> Ali.
>
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