如何获取MSSQLServer,Oracel,Access中的数据字典信息

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--------------- MS SQLServer -----------------
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--表说明
SELECT dbo.sysobjects.name AS TableName,
      dbo.sysproperties.[value] AS TableDesc
FROM dbo.sysproperties INNER JOIN
      dbo.sysobjects ON dbo.sysproperties.id = dbo.sysobjects.id
WHERE (dbo.sysproperties.smallid = 0)
ORDER BY dbo.sysobjects.name

--字段说明
SELECT dbo.sysobjects.name AS TableName, dbo.syscolumns.colid,
      dbo.syscolumns.name AS ColName, dbo.sysproperties.[value] AS ColDesc
FROM dbo.sysproperties INNER JOIN
      dbo.sysobjects ON dbo.sysproperties.id = dbo.sysobjects.id INNER JOIN
      dbo.syscolumns ON dbo.sysobjects.id = dbo.syscolumns.id AND
      dbo.sysproperties.smallid = dbo.syscolumns.colid
ORDER BY dbo.sysobjects.name, dbo.syscolumns.colid

 

--主键、外键信息(简化)
select
 c_obj.name    as CONSTRAINT_NAME
 ,t_obj.name    as TABLE_NAME
 ,col.name    as COLUMN_NAME
 ,case col.colid 
  when ref.fkey1 then 1   
  when ref.fkey2 then 2   
  when ref.fkey3 then 3   
  when ref.fkey4 then 4   
  when ref.fkey5 then 5   
  when ref.fkey6 then 6   
  when ref.fkey7 then 7   
  when ref.fkey8 then 8   
  when ref.fkey9 then 9   
  when ref.fkey10 then 10   
  when ref.fkey11 then 11   
  when ref.fkey12 then 12   
  when ref.fkey13 then 13   
  when ref.fkey14 then 14   
  when ref.fkey15 then 15   
  when ref.fkey16 then 16
 end      as ORDINAL_POSITION
from
 sysobjects c_obj
 ,sysobjects t_obj
 ,syscolumns col
 ,sysreferences  ref
where
 permissions(t_obj.id) != 0
 and c_obj.xtype in ('F ')
 and t_obj.id = c_obj.parent_obj
 and t_obj.id = col.id
 and col.colid   in
 (ref.fkey1,ref.fkey2,ref.fkey3,ref.fkey4,ref.fkey5,ref.fkey6,
 ref.fkey7,ref.fkey8,ref.fkey9,ref.fkey10,ref.fkey11,ref.fkey12,
 ref.fkey13,ref.fkey14,ref.fkey15,ref.fkey16)
 and c_obj.id = ref.constid
union
 select
 i.name     as CONSTRAINT_NAME
 ,t_obj.name    as TABLE_NAME
 ,col.name    as COLUMN_NAME
 ,v.number    as ORDINAL_POSITION
from
 sysobjects  c_obj

9 7 3 1 2 4 8 :