。三基表模式的定义: CREATE TABLE STUDENT (SNO CHAR (6)NOTNULL, SNAME VARCHAR (8)NOTNULL, SEX VARCHAR (2)NOTNULL, BDATE I DATE NOTNULL, HEIGHT DEC (5,2) DEFAUT 000.00 PRIMARY KEY (S#)); ⚫ 三 基表模式的定义: CREATE TABLE STUDENT (SNO CHAR(6)NOTNULL, SNAME VARCHAR(8)NOTNULL, SEX VARCHAR(2)NOTNULL, BDATE DATE NOTNULL, HEIGHT DEC(5,2) DEFAUT 000.00 ⚫ PRIMARY KEY(S#));