步步为营.NET三层架构解析之数据库设计-技术开发专区

步步为营.NET三层架构解析之数据库设计

作者：spring yang 编辑：胡铭娅 2011-03-25 11:54 来源：博客园

【IT168 技术】Net三层架构解析系列文章：

　　.NET三层架构解析之SQLHelper设计

　　.NET三层架构解析之Model四种设计方式

　　要开发用户管理系统,我们首先要了解需求,现在就举一个简单需求,用户表,假设有两种角色用一个字段departID来判断,管理员和员工,

　　我们要先建一个用户表custom和一个部门表department:

CREATE TABLE [dbo].[custom](

    [id] [int] IDENTITY(1,1) NOT NULL,

    [cname] [nvarchar](50) COLLATE Chinese_PRC_CI_AS NOT NULL,

    [departID] [int] NOT NULL,

    [age] [int] NOT NULL,

    [ename] [nvarchar](50) COLLATE Chinese_PRC_CI_AS NOT NULL,

    [password] [nvarchar](50) COLLATE Chinese_PRC_CI_AS NOT NULL,

CONSTRAINT [PK_custom] PRIMARY KEY CLUSTERED

(

    [id] ASC

)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]

) ON [PRIMARY];



CREATE TABLE [dbo].[department](

    [id] [int] IDENTITY(1,1) NOT NULL,

    [departname] [nvarchar](50) COLLATE Chinese_PRC_CI_AS NOT NULL,

    [description] [nchar](10) COLLATE Chinese_PRC_CI_AS NOT NULL,

CONSTRAINT [PK_department] PRIMARY KEY CLUSTERED

(

    [id] ASC

)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]

) ON [PRIMARY]

　　建完数据库表后,开始写存储过程,插入一条数据:

CREATE PROCEDURE [dbo].[spInsertCustom]
@cname nvarchar(50),
@ename nvarchar(50),
@age int,
@departID int,
@password nvarchar(50)
AS
BEGIN
insert into custom(cname,departID,age,ename,password) values (@cname,@departID,@age,@ename,@password)
END
RETURN @@Identity
view sourceprint?create PROCEDURE [dbo].[spInsertDepartment]
@departname nvarchar(50),
@description nvarchar(50)
AS
BEGIN
    insert into department(departname,description)values(@departname,@description)
END
RETURN @@Identity

　现建两个更新一条数据的存储过程:

CREATE PROCEDURE [dbo].[spupdatecustom]
@id int,
@cname nvarchar(50),
@departID int,
@age int,
@ename nvarchar(50),
@password nvarchar(50)
AS
BEGIN
    update
       custom
    set
    cname = @cname,
    departID = @departID,
    age = @age,
    ename = @ename,
    password = @password
    where id = @id
END
COMMIT TRAN
view sourceprint?create procedure spupdatedepart
(
@departname nvarchar(50),
@description nchar(10),
@id int
)
as
UPDATE [dbo].[department]
   SET [departname] = @departname
      ,[description] = @departname
WHERE id=@id

　　再新建两个取出所有用户的存储过程:

CREATE PROCEDURE [dbo].[spGetcustom]
AS
BEGIN
    select * from custom order by id desc
END
view sourceprint?create PROCEDURE [dbo].[spGetAlldepartment]
AS
BEGIN
    select * from department
END

　　再新建一个根据ID取出一条数据的存储过程:

CREATE PROCEDURE [dbo].[spGetcustomer]
@id int
AS
BEGIN
select * from custom where id = @id
END

　　现建一个根据部门名取部门ID的存储过程:

create PROCEDURE [dbo].[spGetdepartmenter]
@departname nvarchar(50)
AS
BEGIN
    select * from department where departname = @departname
END

　　再建两个根据ID删除数据的存储过程:

create PROCEDURE [dbo].[spDeletecustom]
@id int
AS
BEGIN
     delete custom where id = @id
END
view sourceprint?CREATE PROCEDURE spdeletedepart
@id int
AS
BEGIN
    delete department where id = @id
END
GO

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