```Python hl_lines="5-6"
{!../../../docs_src/sql_databases/sql_app/database.py!}
```

In this example, we are "connecting" to a SQLite database (opening a file with the SQLite database).

The file will be located at the same directory in the file `sql_app.db`.

That's why the last part is `./sql_app.db`.

If you were using a **PostgreSQL** database instead, you would just have to uncomment the line:

```Python