mysql> CREATE TABLE student ( -> st_num int NOT NULL, -> st_name varchar(20) NOT NULL, -> st_term int NOT NULL DEFAULT 0, -> st_point int NOT NULL DEFAULT 0 -> ); Query OK, 0 rows affected (0.01 sec) mysql> CREATE TABLE professor ( -> pr_num int NULL, -> pr_name varchar(20) NOT NULL, -> pr_age int NOT NULL, -> pr_room varchar(45) NOT NULL, -> pr_state varchar(45) NOT NULL DEFAULT '재직', -> pr_pos..