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我有一個調查，我需要爲它設計一個數據庫來存儲它的結果，並使用一些查詢檢索結果。如何獲得每個答案的回答者數量？
當前數據庫的設計，我已經是如下：
Respondents Table: RespondentID, Name, OrgCode
Department Table: OrgCode, DepartmentName
Category Table: CategoryID, CategoryName
SubCategory Table: SubCategoryID, SubCategoryName, CategoryID
Questions Table: QuestionID, QuestionDesc, CategoryID, SubCategoryID
SubQuestions Table: SubQuestionID, SubQuestionDesc, QuestionID
Answers Table: AnswerID, AnswerDesc, QuestionID, SubQuestionID
CompleteSurvey Table: ID, RespondentID, CategoryID, AnswerID
本次調查的一個例子：
Category I
SubCategory A
Question 1: what do you think about the following service
SubQuestion 1: Service #1
(Strongly Agree, Agree, Disagree, Strongly Disagree)
SubQuestion 2: Service #2
(Strongly Agree, Agree, Disagree, Strongly Disagree)
讓我們假設有三個員工回答了這個問題
現在，我想編寫一個查詢，顯示說非常同意的受訪者人數，在每個問題或子問題中同意，不同意和強烈同意。 可以通過這個數據庫設計嗎？如果是的話，你能幫我解決這個問題嗎？
另外，你認爲還有其他設計比上述設計更簡單嗎？如果是的話，你可以請我推薦一個嗎？
數據庫設計：
/****** Object: Table [dbo].[Departments] Script Date: 05/20/2012 07:26:11 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Departments](
[OrgCode] [float] NOT NULL,
[DepartmentName] [nvarchar](max) NOT NULL,
CONSTRAINT [PK_Departments] PRIMARY KEY CLUSTERED
(
[OrgCode] 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
/****** Object: Table [dbo].[Category] Script Date: 05/20/2012 07:26:11 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Category](
[CategoryID] [int] IDENTITY(1,1) NOT NULL,
[CategoryName] [nvarchar](50) NOT NULL,
CONSTRAINT [PK_Category] PRIMARY KEY CLUSTERED
(
[CategoryID] 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
/****** Object: Table [dbo].[SubCategory] Script Date: 05/20/2012 07:26:11 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[SubCategory](
[SubCategoryID] [int] IDENTITY(1,1) NOT NULL,
[SubCategoryName] [nvarchar](50) NOT NULL,
[CategoryID] [int] NOT NULL,
CONSTRAINT [PK_SubCategory] PRIMARY KEY CLUSTERED
(
[SubCategoryID] 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
/****** Object: Table [dbo].[Respondents] Script Date: 05/20/2012 07:26:11 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[Respondents](
[RespondentID] [nvarchar](50) NOT NULL,
[Name] [varchar](50) NULL,
[OrgCode] [float] NOT NULL,
CONSTRAINT [PK_Respondents] PRIMARY KEY CLUSTERED
(
[RespondentID] 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].[Questions] Script Date: 05/20/2012 07:26:11 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Questions](
[QuestionID] [int] IDENTITY(1,1) NOT NULL,
[QuestionDesc] [nvarchar](max) NOT NULL,
[CategoryID] [int] NULL,
[SubCategoryID] [int] NULL,
CONSTRAINT [PK_Questions] PRIMARY KEY CLUSTERED
(
[QuestionID] 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
/****** Object: Table [dbo].[CompleteSurvey] Script Date: 05/20/2012 07:26:11 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[CompleteSurvey](
[ID] [int] IDENTITY(1,1) NOT NULL,
[RespondentID] [nvarchar](50) NOT NULL,
[CategoryID] [int] NOT NULL,
[AnswerID] [int] NOT NULL,
CONSTRAINT [PK_CompleteSurvey] 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
/****** Object: Table [dbo].[SubQuestions] Script Date: 05/20/2012 07:26:11 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[SubQuestions](
[SubQuestionID] [int] IDENTITY(1,1) NOT NULL,
[SubQuestionDesc] [nvarchar](max) NOT NULL,
[QuestionID] [int] NULL,
CONSTRAINT [PK_SubQuestions] PRIMARY KEY CLUSTERED
(
[SubQuestionID] 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
/****** Object: Table [dbo].[Answers] Script Date: 05/20/2012 07:26:11 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Answers](
[AnswerID] [int] IDENTITY(1,1) NOT NULL,
[AnswerDesc] [nvarchar](max) NOT NULL,
[QuestionID] [int] NULL,
[SubQuestionID] [int] NULL,
CONSTRAINT [PK_Answers] PRIMARY KEY CLUSTERED
(
[AnswerID] 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
/****** Object: ForeignKey [FK_SubCategory_Category] Script Date: 05/20/2012 07:26:11 ******/
ALTER TABLE [dbo].[SubCategory] WITH CHECK ADD CONSTRAINT [FK_SubCategory_Category] FOREIGN KEY([CategoryID])
REFERENCES [dbo].[Category] ([CategoryID])
GO
ALTER TABLE [dbo].[SubCategory] CHECK CONSTRAINT [FK_SubCategory_Category]
GO
/****** Object: ForeignKey [FK_Respondents_Departments] Script Date: 05/20/2012 07:26:11 ******/
ALTER TABLE [dbo].[Respondents] WITH CHECK ADD CONSTRAINT [FK_Respondents_Departments] FOREIGN KEY([OrgCode])
REFERENCES [dbo].[Departments] ([OrgCode])
GO
ALTER TABLE [dbo].[Respondents] CHECK CONSTRAINT [FK_Respondents_Departments]
GO
/****** Object: ForeignKey [FK_Questions_Category] Script Date: 05/20/2012 07:26:11 ******/
ALTER TABLE [dbo].[Questions] WITH CHECK ADD CONSTRAINT [FK_Questions_Category] FOREIGN KEY([CategoryID])
REFERENCES [dbo].[Category] ([CategoryID])
GO
ALTER TABLE [dbo].[Questions] CHECK CONSTRAINT [FK_Questions_Category]
GO
/****** Object: ForeignKey [FK_Questions_SubCategory] Script Date: 05/20/2012 07:26:11 ******/
ALTER TABLE [dbo].[Questions] WITH CHECK ADD CONSTRAINT [FK_Questions_SubCategory] FOREIGN KEY([SubCategoryID])
REFERENCES [dbo].[SubCategory] ([SubCategoryID])
GO
ALTER TABLE [dbo].[Questions] CHECK CONSTRAINT [FK_Questions_SubCategory]
GO
/****** Object: ForeignKey [FK_CompleteSurvey_Respondents] Script Date: 05/20/2012 07:26:11 ******/
ALTER TABLE [dbo].[CompleteSurvey] WITH CHECK ADD CONSTRAINT [FK_CompleteSurvey_Respondents] FOREIGN KEY([RespondentID])
REFERENCES [dbo].[Respondents] ([RespondentID])
GO
ALTER TABLE [dbo].[CompleteSurvey] CHECK CONSTRAINT [FK_CompleteSurvey_Respondents]
GO
/****** Object: ForeignKey [FK_SubQuestions_Questions] Script Date: 05/20/2012 07:26:11 ******/
ALTER TABLE [dbo].[SubQuestions] WITH CHECK ADD CONSTRAINT [FK_SubQuestions_Questions] FOREIGN KEY([QuestionID])
REFERENCES [dbo].[Questions] ([QuestionID])
GO
ALTER TABLE [dbo].[SubQuestions] CHECK CONSTRAINT [FK_SubQuestions_Questions]
GO
/****** Object: ForeignKey [FK_Answers_Questions] Script Date: 05/20/2012 07:26:11 ******/
ALTER TABLE [dbo].[Answers] WITH CHECK ADD CONSTRAINT [FK_Answers_Questions] FOREIGN KEY([QuestionID])
REFERENCES [dbo].[Questions] ([QuestionID])
GO
ALTER TABLE [dbo].[Answers] CHECK CONSTRAINT [FK_Answers_Questions]
GO
/****** Object: ForeignKey [FK_Answers_SubQuestions] Script Date: 05/20/2012 07:26:11 ******/
ALTER TABLE [dbo].[Answers] WITH CHECK ADD CONSTRAINT [FK_Answers_SubQuestions] FOREIGN KEY([SubQuestionID])
REFERENCES [dbo].[SubQuestions] ([SubQuestionID])
GO
ALTER TABLE [dbo].[Answers] CHECK CONSTRAINT [FK_Answers_SubQuestions]
GO