创建实体数据模型（EF基础系列5）

现在我要来为上面一节末尾给出的数据库（SchoolDB）创建实体数据模型；

SchoolDB数据库的脚本我已经写好了，如下：

USE master
GO
IF EXISTS(SELECT * FROM sys.sysdatabases WHERE name='SchoolDB')
DROP DATABASE SchoolDB;
GO
CREATE DATABASE SchoolDB
GO
USE SchoolDB;

GO
--创建Standard表
IF EXISTS (SELECT * FROM sysobjects WHERE name='Standard')
DROP TABLE [Standard];
GO
CREATE TABLE  [Standard]
(
StandardID INT PRIMARY KEY ,
StandardName NVARCHAR(50),
[Description] NVARCHAR(250)
);

GO

--创建Student表
IF EXISTS (SELECT * FROM sysobjects WHERE name='Student')
DROP TABLE Student;
GO
CREATE TABLE  Student
(
StudentID INT PRIMARY KEY,
StudentName NVARCHAR(100) NOT NULL,
StandardID INT  REFERENCES [Standard](StandardID),
[RowVersion] NVARCHAR(50)

);

GO

--创建StudentAddress表
IF EXISTS (SELECT * FROM sysobjects WHERE name='StudentAddress')
DROP TABLE StudentAddress;
GO
CREATE TABLE  StudentAddress
(
StudentID INT PRIMARY KEY,
Address1 NVARCHAR(100) ,
Address2 NVARCHAR(100),
City NVARCHAR(100),
[State] NVARCHAR(100),
CONSTRAINT StudentID_FK FOREIGN KEY(StudentID) REFERENCES dbo.Student(StudentID)
);

GO

--创建Teacher表
IF EXISTS (SELECT * FROM sysobjects WHERE name='Teacher')
DROP TABLE Teacher;
GO
CREATE TABLE  Teacher
(
TeacherID INT PRIMARY KEY ,
TeacherName NVARCHAR(50),
StandardID INT  REFERENCES [Standard](StandardID),
TeacherType NVARCHAR (100)

);
GO

--创建Course表
IF EXISTS (SELECT * FROM sysobjects WHERE name='Course')
DROP TABLE Course;
GO
CREATE TABLE  Course
(
CourseID INT PRIMARY KEY ,
CourseName NVARCHAR(50),
Location NVARCHAR(500),
TeacherID INT REFERENCES dbo.Teacher(TeacherID)

);

GO

--创建StudentCourse表
IF EXISTS (SELECT * FROM sysobjects WHERE name='StudentCourse')
DROP TABLE StudentCourse;
GO
CREATE TABLE  StudentCourse
(
StudentID INT  REFERENCES Student(StudentID),
CourseID INT  REFERENCES dbo.Course(CourseID),
CONSTRAINT StudentID_CourseID PRIMARY KEY(StudentID,CourseID),

);

GO

首先我们打开上面一节创建的项目，选中“项目名称”，右键选择”属性“，我们要确保使用的.NET framework版本是4.5；



接下来，就是创建实体数据模型了：选中项目名称：











现在我们以XML编译器的方式打开EDMX文件看看：