sqlserver创建表

 --创建学员信息数据表
 use StudentManageDB
 go
  if exists(select * from sysobjects where name='Students')
 drop table Students
 go
 create table Students
 (
     StudentId int identity(10000,1),--学号
     StudentName varchar(20) not null,--姓名
     Gender char(2) not null,--性别
     Birthday datetime not null,--出生日期
     StudentIdNo numeric(18,0) not null,--身份证号
     Age int not null,--年龄
     PhoneNumber varchar(50),
     StudentAddress varchar(500),
     ClassId int  not null   --班级外键
 )
 go
 --创建班级表
 if exists(select * from sysobjects where name='StudentClass')
 drop table StudentClass
 go
 create table StudentClass
 (
     ClassId int primary key,--班级编号
     ClassName varchar(20) not null
 )
 go
 --创建成绩表
 if exists(select * from sysobjects where name='ScoreList')
 drop table ScoreList
 go
 create table ScoreList
 (
     Id int identity(1,1) primary key,
     StudentId int not null,--学号外键
     CSharp int null,
     SQLServer int null,
     UpdateTime datetime not null--更新时间
 )
 go
 --创建管理员表
 if exists(select * from sysobjects where name='Admins')
 drop table Admins
 go
 create table Admins
 (
     LoignId int identity(1000,1) primary key,
     LoginPwd varchar(20) not null,--登录密码
     AdminName varchar(20) not null
 )
 go