This example demonstrates how to set up a PostgreSQL foreign data wrapper for staging data access. It shows the process of creating a foreign server, mapping users, and importing an external schema into a local staging schema. The code uses the `postgres_fdw` extension, along with SQL commands such as `CREATE SERVER`, `CREATE USER MAPPING`, and `IMPORT FOREIGN SCHEMA`. It also includes a commented example of querying imported tables, like selecting from `staging.users` to create a local table. The approach relies on PostgreSQL’s FDW API to connect to a remote database and expose its tables locally.