我有大约8个实体都与一个公共实体有一对一的关系。SQL数据实体实体关联
客户端没有从预定义数据中进行选择,因此没有必要将FK用作约束条件。
有问题的主表称为完成表,它包含从客户端发送到服务器的四种未知十六进制颜色。
例如,当建造门时,门的不同部分和其外部部分的颜色都可以具有不同的颜色。因此,所有这些表格都是有问题的,它们的数据总是来自客户端的新鲜数据,而不是从下拉菜单中选择,或者从我提供给客户端选择的其他预定义数据中选择。
我的问题是,将这个完成实体与需要表达其完成的其他实体关联的最佳方法是什么?
我正在添加一个我正在处理的图表的屏幕截图,这些不是所有的实体,而只是现在正在讨论的图表,以及将帮助向他人阐述我需要解决方案的图表。
我还包括一些脚本。
/****** 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
下面需要实体的每一个与终点表关联。每个实体新记录都有一个完成关系。 是否有可能将这些关联,并且仍然能够在DELETE上执行级联,不带有循环引用问题?
您可以更详细地解释一下级联删除的要求吗?您预计哪个记录被删除,以及您预计哪些(相关)记录需要自动删除? – Geoff