/**
   * Returns the value for this configuration parameter.
   *
   * @param paramName a valid configuration parameter, one of the String constants in this class.
   * @return the configuration value.
   * @throws IllegalArgumentException if the paramName is invalid.
   */
  public String getConfigParam(String paramName) throws IllegalArgumentException {

    return DbConfigManager.getConfigParam(props, paramName);
  }