今天找到一个关于数据字典的文章，转载一下吧

简单的3个SQL语句

数据库字典包括表结构(分2K和2005）、索引和主键.外键.约束.视图.函数.存储过程.触发器.规则。可以在企业管理器、查询分析器中简单执行，直接了当的查出SQL2K及SQL2005的所有数据字典，方便文档的编写，希望对大家有帮助。

1. SqlServer2000数据库字典--表结构.sql

SELECT TOP 100 PERCENT --a.id,
      CASE WHEN a.colorder = 1 THEN d.name ELSE '' END AS 表名,
      CASE WHEN a.colorder = 1 THEN isnull(f.value, '') ELSE '' END AS 表说明,
      a.colorder AS 字段序号, a.name AS 字段名, CASE WHEN COLUMNPROPERTY(a.id,
      a.name, 'IsIdentity') = 1 THEN '√' ELSE '' END AS 标识,
      CASE WHEN EXISTS
          (SELECT 1
         FROM dbo.sysindexes si INNER JOIN
               dbo.sysindexkeys sik ON si.id = sik.id AND si.indid = sik.indid INNER JOIN
               dbo.syscolumns sc ON sc.id = sik.id AND sc.colid = sik.colid INNER JOIN
               dbo.sysobjects so ON so.name = si.name AND so.xtype = 'PK'
         WHERE sc.id = a.id AND sc.colid = a.colid) THEN '√' ELSE '' END AS 主键,
      b.name AS 类型, a.length AS 长度, COLUMNPROPERTY(a.id, a.name, 'PRECISION')
      AS 精度, ISNULL(COLUMNPROPERTY(a.id, a.name, 'Scale'), 0) AS 小数位数,
      CASE WHEN a.isnullable = 1 THEN '√' ELSE '' END AS 允许空, ISNULL(e.text, '')
      AS 默认值, ISNULL(g.[value], '') AS 字段说明, d.crdate AS 创建时间,
      CASE WHEN a.colorder = 1 THEN d.refdate ELSE NULL END AS 更改时间
FROM dbo.syscolumns a LEFT OUTER JOIN
      dbo.systypes b ON a.xtype = b.xusertype INNER JOIN
      dbo.sysobjects d ON a.id = d.id AND d.xtype = 'U' AND
      d.status >= 0 LEFT OUTER JOIN
      dbo.syscomments e ON a.cdefault = e.id LEFT OUTER JOIN
      dbo.sysproperties g ON a.id = g.id AND a.colid = g.smallid AND
      g.name = 'MS_Description' LEFT OUTER JOIN
      dbo.sysproperties f ON d.id = f.id AND f.smallid = 0 AND
      f.name = 'MS_Description'
ORDER BY d.name, a.colorder

    SqlServer2005数据库字典--表结构.sql

SELECT TOP 100 PERCENT --a.id,
      CASE WHEN a.colorder = 1 THEN d.name ELSE '' END AS 表名,
      CASE WHEN a.colorder = 1 THEN isnull(f.value, '') ELSE '' END AS 表说明,
      a.colorder AS 字段序号, a.name AS 字段名, CASE WHEN COLUMNPROPERTY(a.id,
      a.name, 'IsIdentity') = 1 THEN '√' ELSE '' END AS 标识,
      CASE WHEN EXISTS
          (SELECT 1
         FROM dbo.sysindexes si INNER JOIN
               dbo.sysindexkeys sik ON si.id = sik.id AND si.indid = sik.indid INNER JOIN
               dbo.syscolumns sc ON sc.id = sik.id AND sc.colid = sik.colid INNER JOIN
               dbo.sysobjects so ON so.name = si.name AND so.xtype = 'PK'
         WHERE sc.id = a.id AND sc.colid = a.colid) THEN '√' ELSE '' END AS 主键,
      b.name AS 类型, a.length AS 长度, COLUMNPROPERTY(a.id, a.name, 'PRECISION')
      AS 精度, ISNULL(COLUMNPROPERTY(a.id, a.name, 'Scale'), 0) AS 小数位数,
      CASE WHEN a.isnullable = 1 THEN '√' ELSE '' END AS 允许空, ISNULL(e.text, '')
      AS 默认值, ISNULL(g.[value], '') AS 字段说明, d.crdate AS 创建时间,
      CASE WHEN a.colorder = 1 THEN d.refdate ELSE NULL END AS 更改时间
FROM dbo.syscolumns a LEFT OUTER JOIN
      dbo.systypes b ON a.xtype = b.xusertype INNER JOIN
      dbo.sysobjects d ON a.id = d.id AND d.xtype = 'U' AND
      d.status >= 0 LEFT OUTER JOIN
      dbo.syscomments e ON a.cdefault = e.id LEFT OUTER JOIN
      sys.extended_properties g ON a.id = g.major_id AND a.colid = g.minor_id AND
      g.name = 'MS_Description' LEFT OUTER JOIN
      sys.extended_properties f ON d.id = f.major_id AND f.minor_id = 0 AND
      f.name = 'MS_Description'
ORDER BY d.name, 字段序号

2. SqlServer数据库字典--索引.sql

SELECT TOP 100 PERCENT --a.id,
      CASE WHEN b.keyno = 1 THEN c.name ELSE '' END AS 表名,
      CASE WHEN b.keyno = 1 THEN a.name ELSE '' END AS 索引名称, d.name AS 列名,
      b.keyno AS 索引顺序, CASE indexkey_property(c.id, b.indid, b.keyno, 'isdescending')
      WHEN 1 THEN '降序' WHEN 0 THEN '升序' END AS 排序, CASE WHEN p.id IS NULL
      THEN '' ELSE '√' END AS 主键, CASE INDEXPROPERTY(c.id, a.name, 'IsClustered')
      WHEN 1 THEN '√' WHEN 0 THEN '' END AS 聚集, CASE INDEXPROPERTY(c.id,
      a.name, 'IsUnique') WHEN 1 THEN '√' WHEN 0 THEN '' END AS 唯一,
      CASE WHEN e.id IS NULL THEN '' ELSE '√' END AS 唯一约束,
      a.OrigFillFactor AS 填充因子, c.crdate AS 创建时间, c.refdate AS 更改时间
FROM dbo.sysindexes a INNER JOIN
      dbo.sysindexkeys b ON a.id = b.id AND a.indid = b.indid INNER JOIN
      dbo.syscolumns d ON b.id = d.id AND b.colid = d.colid INNER JOIN
      dbo.sysobjects c ON a.id = c.id AND c.xtype = 'U' LEFT OUTER JOIN
      dbo.sysobjects e ON e.name = a.name AND e.xtype = 'UQ' LEFT OUTER JOIN
      dbo.sysobjects p ON p.name = a.name AND p.xtype = 'PK'
WHERE (OBJECTPROPERTY(a.id, N'IsUserTable') = 1) AND (OBJECTPROPERTY(a.id,
      N'IsMSShipped') = 0) AND (INDEXPROPERTY(a.id, a.name, 'IsAutoStatistics') = 0)
ORDER BY c.name, a.name, b.keyno

3. SqlServer数据库字典--表.视图.函数.存储过程.触发器.主键.外键.约束.规则.sql

SELECT DISTINCT
      TOP 100 PERCENT isnull(p.name,'') AS 父对象, o.xtype,
      CASE o.xtype WHEN 'C' THEN 'CHECK 约束' WHEN 'D' THEN '默认值或DEFAULT约束'
       WHEN 'F' THEN 'FOREIGNKEY约束' WHEN 'L' THEN '日志' WHEN 'FN' THEN '标量函数'
       WHEN 'IF' THEN '内嵌表函数' WHEN 'P' THEN '存储过程' WHEN 'PK' THEN 'PRIMARYKEY约束'
       WHEN 'RF' THEN '复制筛选存储过程' WHEN 'S' THEN '系统表' WHEN 'TF' THEN '表函数'
       WHEN 'TR' THEN '触发器' WHEN 'U' THEN '用户表' WHEN 'UQ' THEN 'UNIQUE 约束'
       WHEN 'V' THEN '视图' WHEN 'X' THEN '扩展存储过程' WHEN 'R' THEN '规则' ELSE NULL
       END AS 类型, o.name AS 对象名, o.crdate AS 创建时间, o.refdate AS 更改时间,
      c.text AS 声明语句,OBJECTPROPERTY(o.id, N'IsMSShipped')
FROM dbo.sysobjects o Left JOIN
      dbo.sysobjects p ON o.parent_obj = p.id LEFT OUTER JOIN
      dbo.syscomments c ON o.id = c.id
WHERE --(o.xtype IN ('C','D','F','PK','UQ','L','FN','IF','TF','TR','P','R','RF','X','S','U','V')) AND
      (OBJECTPROPERTY(o.id, N'IsMSShipped') = 0) AND (isnull(p.name,'') <> N'dtproperties')
ORDER BY o.xtype DESC

然后照着这个用了一下，真的很好！