SELECT
    D.DEPARTMENT_ID,
    D.DEPARTMENT_NAME,
    MIN(E.SALARY) MINIM
FROM
    EMPLOYEES     E,
    DEPARTMENTS   D
WHERE
    E.DEPARTMENT_ID = D.DEPARTMENT_ID
GROUP BY
    D.DEPARTMENT_ID,
    D.DEPARTMENT_NAME
HAVING
    AVG(SALARY) = (
        SELECT
            MAX(AVG(E.SALARY))
        FROM
            EMPLOYEES     E,
            DEPARTMENTS   D
        WHERE
            E.DEPARTMENT_ID = D.DEPARTMENT_ID
        GROUP BY
            D.DEPARTMENT_ID
    );