数据库创建和插入

//数据库的插入

--在数据库中根据上述表的定义创建上述数据库，同时需建立相应的约束关系
create table [EMPLOYEE](
    [EmpNo] varchar(8) not null primary key,
    [EmpName] varchar(50) not null,
    [EmpSex] varchar(2) check([EmpSex]='男' or [EmpSex]='女'),
    [EmpAge] int check([EmpAge]>0)
)
create table [COMPANY](
    [CmpNo] varchar(8) not null primary key,
    [CmpName] varchar(50) not null
)
create table [WORKS](
    [EmpNo] varchar(8) references [EMPLOYEE]([EmpNo]),
    [CmpNo] varchar(8) references [COMPANY]([CmpNo]),
    [Salary] int check([Salary]>0)



--将上面的数据输入到数据库中相应的表中
insert into [EMPLOYEE] values('E01','张三','女',32);
insert into [EMPLOYEE] values('E02','李四','男',28);
insert into [EMPLOYEE] values('E03','王五','女',42);
insert into [EMPLOYEE] values('E04','赵六','男',37);
insert into [EMPLOYEE] values('E05','陈七','男',51);
 
insert into [COMPANY] values('C01','阳光科技');
insert into [COMPANY] values('C02','晨光科技');
insert into [COMPANY] values('C03','未来科技');
 
insert into [WORKS] values('E01','C01',3000);
insert into [WORKS] values('E01','C02',4000);
insert into [WORKS] values('E02','C02',5000);
insert into [WORKS] values('E02','C03',2500);
insert into [WORKS] values('E03','C01',3500);
insert into [WORKS] values('E04','C02',3000);