Re: a very naive question about table names in Postgres

I know that on my Mac the tables are  kept in the  data directory /Users/martinmueller/Library/Application Support/Postgres/var-13.  If I go there I see that internally the tables have numbers.  Somewhere in the system there must be a table that maps the name I gave to table X  to the numerical  inside the database.

Check the pg_class table in the system catalog.  The numeric value is the OID.

https://www.postgresql.org/docs/14/catalog-pg-class.html

Craig