EF6 不从数据库生成外键关联

EF6 Does not generate foreign key association from database

问题:

我正在尝试使用数据库优先方法创建 EF6 模型。简单来说,我有2个tables tblUsertblMilkMan,它们在UserID列上有外键关系。但是当我创建一个新的 EDMX 图并添加 2 tables:

  1. 我没有看到关系
  2. 没有创建导航属性

请告诉我我做错了什么!

数据库模式:

Table 脚本:

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 设计器视图:

对我没有帮助的相关链接:

环境:

问题出在下一行 -

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有聚簇索引和非聚簇索引的原因。常见的最佳做法是创建一个主键作为聚簇索引。 (Source)

如果删除 NONCLUSTERED INDEX,它将在 EDMX 中看到关系。

如何删除?