This illustration shows a one-to-one bean relationship in database tables. There is a table row on the left labeled "EMP" with the following columns: "empno", "empName", "salary", and "FK:address". Next to this table row, on the right, is a table row labeled "ADDRESS" with the following columns: "AddressPK", "street", "city", "state", and "ZIP". There is an arrow pointing from the "FK:address" column in the "EMP" table row to the "AddressPK" column in the "ADDRESS" table row.