建立学生信息数据库STUDENT,(学号姓名)、(课程号课程名)、(学号课程成 ...答:insert into stu_cou values (1,2,78);insert into stu_cou values (1,3,77);insert into stu_cou values (1,4,100);insert into stu_cou values (2,1,26);insert into stu_cou values (2,2,78);insert into stu_cou values (2,3,99);insert into stu_cou values (2,4,100);...
给定数据库中,包括“学生表”,“课程表”,“选课表”等三个数据表,表...答:new Student {Name="孙敏", ID=3, Scores= new List<int> {88, 94, 65, 85}},new Student {Name="刘晓", ID=4, Scores= new List<int> {97, 89, 85, 82}},new Student {Name="扬帆", ID=5, Scores= new List<int> {35, 72, 91, 70}} };return students;} static void...
数据库原理题,设有一个关系数据库,有三个基本表,表的结构如下;高手帮答...答:姓名 char[10],年龄 int,性别 char[2] defaut '男',系名 char[10])3 create table SC(学号 char[10],课程号 char[10],成绩 int,primary key (学号,课程号),foreignkey(学号) references STUDENT(学号),foreign key(课程号) references COURSE(课程号))4 delete from SC where 成绩 is ...