数据库实验二代码

数据库实验二代码create table S ( SNO char(3) primary key, SNAME char(10), STATUS char(2), CITY char(10) ); create table P ( PNO char(3) primary key, PNAME char(10), COLOR char(4), WEIGHT int ); create table J ( JNO char(3) primary key, JNAME char(10), CITY char(10) );