Oracle建表及添加数据

Dear 丶 2022-05-28 00:47 88阅读 0赞

--建表
    --student表+注释
    create table student( sno varchar2(3) not null, sname varchar2(9) not null, ssex varchar2(3) not null, sbirthday date, sclass varchar2(5), constraint pk_student primary key(sno) );
    comment on column student.sno is '学号（主键）';
    comment on column student.sname is '学生姓名';
    comment on column student.ssex is '学生性别';
    comment on column student.sbirthday is '学生出生年月日';
    comment on column student.sclass is '学生所在班级';
    --course表+注释
    create table course( cno varchar2(5) not null, cname varchar2(15) not null, tno varchar2(3) not null, constraint pk_course primary key(cno) );
    comment on column course.cno is '课程编号（主键）';
    comment on column course.cname is '课程名称';
    comment on column course.tno is '教工编号（外键）';
    --score表+注释
    create table score( sno varchar2(3) not null, cno varchar2(5) not null, degree number(4,1), constraint pk_score primary key(sno,cno) );
    comment on column score.sno is '学号（主键）';
    comment on column score.cno is '课程编号（主键）';
    comment on column score.degree is '成绩';
    --teacher表+注释
    create table teacher( tno varchar2(3) not null, tname varchar2(9) not null, tsex varchar2(3) not null, tbirthday date, prof varchar2(9), depart varchar2(15) not null, constraint pk_teacher primary key(tno) );
    comment on column teacher.tno is '教工编号（主键）';
    comment on column teacher.tname is '教工姓名';
    comment on column teacher.tsex is '教工性别';
    comment on column teacher.tbirthday is '教工出生年月';
    comment on column teacher.prof is '职称';
    comment on column teacher.depart is '教工所在单位';
    --添加外键
    alter table course add constraint fk_tno foreign key(tno) references teacher(tno);
    alter table score add constraint fk_sno foreign key(sno) references student(sno);
    alter table score add constraint fk_cno foreign key(cno) references course(cno); 
    --添加数据
    --Student表
    insert into student(sno,sname,ssex,sbirthday,sclass) values(108,'曾华','男',to_date('1977-09-01','yyyy-mm-dd'),95033);
    insert into student(sno,sname,ssex,sbirthday,sclass) values(105,'匡明','男',to_date('1975-10-02','yyyy-mm-dd'),95031);
    insert into student(sno,sname,ssex,sbirthday,sclass) values(107,'王丽','女',to_date('1976-01-23','yyyy-mm-dd'),95033);
    insert into student(sno,sname,ssex,sbirthday,sclass) values(101,'李军','男',to_date('1976-02-20','yyyy-mm-dd'),95033);
    insert into student(sno,sname,ssex,sbirthday,sclass) values(109,'王芳','女',to_date('1975-02-10','yyyy-mm-dd'),95031);
    insert into student(sno,sname,ssex,sbirthday,sclass) values(103,'陆君','男',to_date('1974-06-03','yyyy-mm-dd'),95031);
    --teacher表
    insert into teacher(tno,tname,tsex,tbirthday,prof,depart) values(804,'李诚','男',to_date('1958/12/02','yyyy-mm-dd'),'副教授','计算机系');
    insert into teacher(tno,tname,tsex,tbirthday,prof,depart) values(856,'张旭','男',to_date('1969/03/12','yyyy-mm-dd'),'讲师','电子工程系');
    insert into teacher(tno,tname,tsex,tbirthday,prof,depart) values(825,'王萍','女',to_date('1972/05/05','yyyy-mm-dd'),'助教','计算机系');
    insert into teacher(tno,tname,tsex,tbirthday,prof,depart) values(831,'刘冰','女',to_date('1977/08/14','yyyy-mm-dd'),'助教','电子工程系');
    --course表(添加外键后要先填teacher表中数据去满足外键约束)
    insert into course(cno,cname,tno) values('3-105','计算机导论',825);
    insert into course(cno,cname,tno) values('3-245','操作系统',804);
    insert into course(cno,cname,tno) values('6-166','数字电路',856);
    insert into course(cno,cname,tno) values('9-888','高等数学',831);
    --score表（添加外键后要先填Student，course表中数据去满足外键约束）
    insert into score(sno,cno,degree) values(103,'3-245',86);
    insert into score(sno,cno,degree) values(105,'3-245',75);
    insert into score(sno,cno,degree) values(109,'3-245',68);
    insert into score(sno,cno,degree) values(103,'3-105',92);
    insert into score(sno,cno,degree) values(105,'3-105',88);
    insert into score(sno,cno,degree) values(109,'3-105',76);
    insert into score(sno,cno,degree) values(101,'3-105',64);
    insert into score(sno,cno,degree) values(107,'3-105',91);
    insert into score(sno,cno,degree) values(108,'3-105',78);
    insert into score(sno,cno,degree) values(101,'6-166',85);
    insert into score(sno,cno,degree) values(107,'6-166',79);
    insert into score(sno,cno,degree) values(108,'6-166',81);