我有大約8個實體都與一個公共實體有一對一的關係。SQL數據實體實體關聯
客戶端沒有從預定義數據中進行選擇,因此沒有必要將FK用作約束條件。
有問題的主表稱爲完成表,它包含從客戶端發送到服務器的四種未知十六進制顏色。
例如,當建造門時,門的不同部分和其外部部分的顏色都可以具有不同的顏色。因此,所有這些表格都是有問題的,它們的數據總是來自客戶端的新鮮數據,而不是從下拉菜單中選擇,或者從我提供給客戶端選擇的其他預定義數據中選擇。
我的問題是,將這個完成實體與需要表達其完成的其他實體關聯的最佳方法是什麼?
我正在添加一個我正在處理的圖表的屏幕截圖,這些不是所有的實體,而只是現在正在討論的圖表,以及將幫助向他人闡述我需要解決方案的圖表。
我還包括一些腳本。
/****** Object: Table [dbo].[Finish] Script Date: 06/22/2012 15:08:37 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[Finish](
[ID] [int] NOT NULL,
[Left] [varchar](30) NULL,
[Right] [varchar](30) NULL,
[Top] [varchar](30) NULL,
[Bottom] [varchar](30) NULL,
[Note] [varchar](150) NULL,
CONSTRAINT [PK_Finish] 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]
GO
SET ANSI_PADDING OFF
GO
/****** Object: Table [dbo].[Horizontal] Script Date: 06/22/2012 15:08:37 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[Horizontal](
[ID] [int] IDENTITY(11,1) NOT NULL,
[Name] [varchar](15) NOT NULL,
[Floor] [smallint] NOT NULL,
[SizeID] [int] NOT NULL,
[GlassPocket] [decimal](5, 3) NULL,
[IsFiller] [bit] NOT NULL,
[Note] [varchar](150) NULL,
CONSTRAINT [PK_Horizontal] 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]
GO
SET ANSI_PADDING OFF
GO
/****** Object: Table [dbo].[Door] Script Date: 06/22/2012 15:08:36 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[Door](
[ID] [int] IDENTITY(421,1) NOT NULL,
[BayID] [int] NOT NULL,
[Position] [tinyint] NOT NULL,
[HasJamb] [bit] NOT NULL,
[HasThreshold] [bit] NOT NULL,
[IsAutoShowroom] [bit] NOT NULL,
[IsSingle] [bit] NOT NULL,
[Type] [varchar](10) NOT NULL,
[SizeID] [int] NOT NULL,
[Note] [varchar](150) NULL,
CONSTRAINT [PK_Door] 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]
GO
SET ANSI_PADDING OFF
GO
/****** Object: Table [dbo].[Leaf] Script Date: 06/22/2012 15:08:37 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[Leaf](
[ID] [int] IDENTITY(21,1) NOT NULL,
[DoorID] [int] NOT NULL,
[Position] [tinyint] NOT NULL,
[Stile] [varchar](10) NOT NULL,
[Bottomrail] [decimal](5, 3) NOT NULL,
[Hand] [varchar](5) NOT NULL,
[IsActive] [bit] NOT NULL,
[Swing] [varchar](5) NOT NULL,
[SizeID] [int] NOT NULL,
[Note] [varchar](150) NULL,
CONSTRAINT [PK_Leaf] 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]
GO
SET ANSI_PADDING OFF
GO
/****** Object: Table [dbo].[Bay] Script Date: 06/22/2012 15:08:36 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[Bay](
[ID] [int] IDENTITY(1213,1) NOT NULL,
[ElevationID] [int] NOT NULL,
[Position] [tinyint] NOT NULL,
[SizeID] [int] NOT NULL,
[Note] [varchar](150) NULL,
CONSTRAINT [PK_Bay] 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]
GO
SET ANSI_PADDING OFF
GO
下面需要實體的每一個與終點表關聯。每個實體新記錄都有一個完成關係。 是否有可能將這些關聯,並且仍然能夠在DELETE上執行級聯,不帶有循環引用問題?
您可以更詳細地解釋一下級聯刪除的要求嗎?您預計哪個記錄被刪除,以及您預計哪些(相關)記錄需要自動刪除? – Geoff