数据表
--1.学生表
Student(SId,Sname,Sage,Ssex)
--SId 学生编号,Sname 学生姓名,Sage 出生年月,Ssex 学生性别
--2.课程表
Course(CId,Cname,TId)
--CId 课程编号,Cname 课程名称,TId 教师编号
--3.教师表
Teacher(TId,Tname)
--TId 教师编号,Tname 教师姓名
--4.成绩表
SC(SId,CId,score)
--SId 学生编号,CId 课程编号,score 分数
学生表 Student
create table Student(SId varchar(10),Sname varchar(10),Sage datetime,Ssex varchar(10)); insert into Student values(‘01‘ , ‘赵雷‘ , ‘1990-01-01‘ , ‘男‘); insert into Student values(‘02‘ , ‘钱电‘ , ‘1990-12-21‘ , ‘男‘); insert into Student values(‘03‘ , ‘孙风‘ , ‘1990-05-20‘ , ‘男‘); insert into Student values(‘04‘ , ‘李云‘ , ‘1990-08-06‘ , ‘男‘); insert into Student values(‘05‘ , ‘周梅‘ , ‘1991-12-01‘ , ‘女‘); insert into Student values(‘06‘ , ‘吴兰‘ , ‘1992-03-01‘ , ‘女‘); insert into Student values(‘07‘ , ‘郑竹‘ , ‘1989-07-01‘ , ‘女‘); insert into Student values(‘09‘ , ‘张三‘ , ‘2017-12-20‘ , ‘女‘); insert into Student values(‘10‘ , ‘李四‘ , ‘2017-12-25‘ , ‘女‘); insert into Student values(‘11‘ , ‘李四‘ , ‘2017-12-30‘ , ‘女‘); insert into Student values(‘12‘ , ‘赵六‘ , ‘2017-01-01‘ , ‘女‘); insert into Student values(‘13‘ , ‘孙七‘ , ‘2018-01-01‘ , ‘女‘);
科目表 Course
教师表 Teacher
create table Teacher(TId varchar(10),Tname varchar(10)); insert into Teacher values(‘01‘ , ‘张三‘); insert into Teacher values(‘02‘ , ‘李四‘); insert into Teacher values(‘03‘ , ‘王五‘);
原文：https://www.cnblogs.com/MarlonKang/p/12419719.html
