prefix}amelia_p_t_s_p_s_ibfk_1` FOREIGN KEY (periodId) REFERENCES {$specialDayPeriodTable}(id) ON DELETE CASCADE, CONSTRAINT `{$wpdb->prefix}amelia_p_t_s_p_s_ibfk_2` FOREIGN KEY (serviceId) REFERENCES {$serviceTable}(id) ON DELETE CASCADE ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE utf8_general_ci"; } }