數據庫數據字典是壹組表和視圖結構。它們存放在SYSTEM表空間中。
數據庫數據字典不僅是每個數據庫的中心。而且對每個用戶也是非常重要的信息。用戶可以用SQL語句訪問數據庫數據字典。
生成數據庫參考代碼如下：
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author: <Carbe>
-- Create date: <2014-09-19>
-- Description: <生成數據庫字典>
-- =============================================
CREATE PROCEDURE [dbo].[CreateDatabaseDictionarie]
AS
BEGIN
DECLARE @TableName nvarchar(35),@htmls varchar(8000)
DECLARE @字段名稱 VARCHAR(200)
DECLARE @類型 VARCHAR(200)
DECLARE @長度 VARCHAR(200)
DECLARE @數值精度 VARCHAR(200)
DECLARE @小數位數 VARCHAR(200)
DECLARE @默認值 VARCHAR(200)
DECLARE @允許為空 VARCHAR(200)
DECLARE @外鍵 VARCHAR(200)
DECLARE @主鍵 VARCHAR(200)
DECLARE @描述 VARCHAR(200)
SET NOCOUNT ON;
DECLARE Tbls CURSOR
FOR
Select distinct Table_name
FROM INFORMATION_SCHEMA.COLUMNS
order by Table_name
OPEN Tbls
PRINT '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "str.definition AS VARCHAR(20)),'') + '</td>',
' <td>' + CAST(clmns.is_nullable AS VARCHAR(20)) + '</td>' ,
' <td>' + CAST(clmns.is_computed AS VARCHAR(20)) + '</td>' ,
' <td>' + CAST(clmns.is_identity AS VARCHAR(20)) + '</td>' ,
' <td>' + ISNULL(CAST(exprop.value AS VARCHAR(500)),'') + '</td>'
FROM sys.tables AS tbl
INNER JOIN sys.all_columns AS clmns ON clmns.object_id=tbl.object_id
LEFT OUTER JOIN sys.indexes AS idx ON idx.object_id = clmns.object_id AND 1 =idx.is_primary_key
LEFT OUTER JOIN sys.index_columns AS idxcol ON idxcol.index_id = idx.index_id AND idxcol.column_id = clmns.column_id AND idxcol.object_id = clmns.object_id AND 0 = idxcol.is_included_column
LEFT OUTER JOIN sys.types AS udt ON udt.user_type_id = clmns.user_type_id
LEFT OUTER JOIN sys.types AS typ ON typ.user_type_id = clmns.system_type_id AND typ.user_type_id = typ.system_type_id
LEFT JOIN sys.default_constraints AS cnstr ON cnstr.object_id=clmns.default_object_id
LEFT OUTER JOIN sys.extended_properties exprop ON exprop.major_id = clmns.object_id AND exprop.minor_id = clmns.column_id AND exprop.name = 'MS_Description'
WHERE (tbl.name = @TableName and exprop.class = 1) --I don't wand to include comments on indexes
ORDER BY clmns.column_id ASC
OPEN TRows
FETCH NEXT FROM TRows INTO @字段名稱,@類型,@長度,@數值精度,@小數位數,@默認值,@允許為空,@外鍵,@主鍵,@描述
WHILE @@FETCH_STATUS = 0
BEGIN
PRINT ' <tr>'
PRINT @字段名稱
PRINT @類型
PRINT @長度
PRINT @數值精度
PRINT @小數位數
PRINT @默認值
PRINT @允許為空
PRINT @外鍵
PRINT @主鍵
PRINT @描述
PRINT ' </tr>'
FETCH NEXT FROM TRows INTO @字段名稱,@類型,@長度,@數值精度,@小數位數,@默認值,@允許為空,@外鍵,@主鍵,@描述
END
CLOSE TRows
DEALLOCATE TRows
PRINT ' </table>'
PRINT ' </div>'
FETCH NEXT FROM Tbls INTO @TableName
END
PRINT ' </body>'
PRINT '</html>'
CLOSE Tbls
DEALLOCATE Tbls
END