Database connection

hi there
can anyone tell me where the files are located that inform the nopcommerce site whch d/b  to connect to?
im using v3.9
Thanks !

I think in

..\Presentation\Nop.Web\App_Data\Settings.txt

Thanks. Its correct.
do you know if there is there any other files that link nopcommerce to a specific url or database? i m hoping to copy my current structure to a new url !

Database - no.  The store URL is also in the Stores configuration page.

Thank you !

where would i find the Stores configuration page?

urs is "/Admin/Store/List"