[英]EF6 Does not generate foreign key association from database
問題:
我正在嘗試使用數據庫優先方法創建EF6模型。 簡單來說,我有2個表tblUser
和tblMilkMan
,它們在UserID
列上具有外鍵關系。 但是,當我創建一個新的EDMX圖並添加2個表時:
請告訴我我做錯了什么!
數據庫架構:
表腳本:
CREATE TABLE [dbo].[tblMilkMan]
(
[RecordID] [INT] NOT NULL
IDENTITY(1, 1) ,
[UserID] [INT] NOT NULL ,
[IsMyTurn] [BIT] NOT NULL ,
[RoundRobinOrder] [INT] NOT NULL
)
ON [PRIMARY]
GO
ALTER TABLE [dbo].[tblMilkMan] ADD CONSTRAINT [PK_tblMilkMan] PRIMARY KEY CLUSTERED ([RecordID]) ON [PRIMARY]
GO
ALTER TABLE [dbo].[tblMilkMan] ADD CONSTRAINT [FK__MilkMan__User__UserID] FOREIGN KEY ([UserID]) REFERENCES [dbo].[tblUser] ([UserID]) ON DELETE CASCADE
GO
CREATE TABLE [dbo].[tblUser]
(
[UserID] [INT] NOT NULL
IDENTITY(1, 1) ,
[LogonName] [VARCHAR](20) COLLATE SQL_Latin1_General_CP437_CI_AS
NOT NULL ,
[Client] [CHAR](4) COLLATE SQL_Latin1_General_CP437_CI_AS
NOT NULL ,
[Password] [VARCHAR](20) COLLATE SQL_Latin1_General_CP437_CI_AS
NOT NULL ,
[PasswordExpires] [DATETIME] NULL ,
[PasswordExpiresAfter] [INT] NOT NULL
CONSTRAINT [DF_tblUser_PasswordExpiresAfter] DEFAULT ( 9999 ) ,
[FirstName] [VARCHAR](20) COLLATE SQL_Latin1_General_CP437_CI_AS
NOT NULL ,
[LastName] [VARCHAR](20) COLLATE SQL_Latin1_General_CP437_CI_AS
NOT NULL
)
ON [PRIMARY]
WITH (
DATA_COMPRESSION = ROW)
GO
ALTER TABLE [dbo].[tblUser] ADD CONSTRAINT [PK_tblUser] PRIMARY KEY CLUSTERED ([UserID]) WITH (DATA_COMPRESSION = ROW) ON [PRIMARY]
GO
CREATE UNIQUE NONCLUSTERED INDEX [IX_tblUser] ON [dbo].[tblUser] ([UserID]) WITH (FILLFACTOR=90, DATA_COMPRESSION = ROW) ON [PRIMARY]
GO
EDMX Designer視圖:
有關幫助我的相關鏈接:
環境:
問題是以下幾行-
CREATE UNIQUE NONCLUSTERED INDEX [IX_tblUser] ON [dbo].[tblUser] ([UserID])
WITH (FILLFACTOR=90, DATA_COMPRESSION = ROW) ON [PRIMARY]
GO
我不知道在同一列上具有聚集索引和非聚集索引的原因。 常見的最佳做法是創建一個主鍵作為聚簇索引。 (資源)
如果刪除該NONCLUSTERED INDEX ,它將在EDMX中看到該關系。
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