/*创建数据/
create table student( sno varchar2(10) primary key, sname varchar2(20), sage number(2), ssex varchar2(5) ); create table teacher( tno varchar2(10) primary key, tname varchar2(20) ); create table course( cno varchar2(10), cname varchar2(20), tno varchar2(20), constraint pk_course primary key (cno,tno) ); create table sc( sno varchar2(10), cno varchar2(10), score number(4,2), constraint pk_sc primary key (sno,cno) ); /*初始化学生表的数据/ insert into student values (‘s001’,’张三’,23,’男’); insert into student values (‘s002’,’李四’,23,’男’); insert into student values (‘s003’,’吴鹏’,25,’男’); insert into student values (‘s004’,’琴沁’,20,’女’); insert into student values (‘s005’,’王丽’,20,’女’); insert into student values (‘s006’,’李波’,21,’男’); insert into student values (‘s007’,’刘玉’,21,’男’); insert into student values (‘s008’,’萧蓉’,21,’女’); insert into student values (‘s009’,’陈萧晓’,23,’女’); insert into student values (‘s010’,’陈美’,22,’女’); commit; /初始化教师表*/ insert into teacher values (‘t001’, ‘刘阳’); insert into teacher values (‘t002’, ‘谌燕’); insert into teacher values (‘t003’, ‘胡明星’); commit; /*初始化课程表/ insert into course values (‘c001’,’J2SE’,’t002’); insert into course values (‘c002’,’Java Web’,’t002’); insert into course values (‘c003’,’SSH’,’t001’); insert into course values (‘c004’,’Oracle’,’t001’); insert into course values (‘c005’,’SQL SERVER 2005’,’t003’); insert into course values (‘c006’,’C#’,’t003’); insert into course values (‘c007’,’JavaScript’,’t002’); insert into course values (‘c008’,’DIV+CSS’,’t001’); insert into course values (‘c009’,’PHP’,’t003’); insert into course values (‘c010’,’EJB3.0’,’t002’); commit; /初始化成绩表/ insert into sc values (‘s001’,’c001’,78.9); insert into sc values (‘s002’,’c001’,80.9); insert into sc values (‘s003’,’c001’,81.9); insert into sc values (‘s004’,’c001’,60.9); insert into sc values (‘s001’,’c002’,82.9); insert into sc values (‘s002’,’c002’,72.9); insert into sc values (‘s003’,’c002’,81.9); insert into sc values (‘s001’,’c003’,’59’); commit;
