数据库，简而言之可视为电子化的文件柜——存储电子文件的处所，用户可以对文件中的数据进行新增、截取、更新、删除等操作。所谓“数据库”是以一定方式储存在一起、能与多个用户共享、具有尽可能小的冗余度、与应用程序彼此独立的数据集合。
适用ACCESS97、2000
这两项磁碟机资料须使用API函数方可取得，代码如下：
Private Declare Function GetVolumeInformation Lib "kernel32" Alias "GetVolumeInformationA" (ByVal lpRootPathName As String, ByVal lpVolumeNameBuffer As String, ByVal nVolumeNameSize As Long, lpVolumeSerialNumber As Long, lpMaximumComponentLength As Long, lpFileSystemFlags As Long, ByVal lpFileSystemNameBuffer As String, ByVal nFileSystemNameSize As Long) As Long
Function GetVolumn(X As String) As String
If Len(X) < 3 Then
X = Left(X, 1) & ":\"
Else
X = Left(X, 3)
End If
Dim nRet As Long, VolName As String, VolSN As Long, MaxCompLen As Long
Dim VolFlags As Long, VolFileSys As String
VolName = Space$(256)
VolFileSys = Space$(256)
nRet = GetVolumeInformation(X, VolName, Len(VolName), _
VolSN, MaxCompLen, VolFlags, _
VolFileSys, Len(VolFileSys))
If nRet = 1 Then
GetVolumn = VolName
Else
GetVolumn = ""
End If
End Function
Function GetNumber(X As String) As String
If Len(X) < 3 Then
X = Left(X, 1) & ":\"
Else
X = Left(X, 3)
End If
Dim nRet As Long, VolName As String, VolSN As Long, MaxCompLen As Long
Dim VolFlags As Long, VolFileSys As String
VolName = Space$(256)
VolFileSys = Space$(256)
nRet = GetVolumeInformation(X, VolName, Len(VolName), _
VolSN, MaxCompLen, VolFlags, _
VolFileSys, Len(VolFileSys))
If nRet = 1 Then
GetNumber = VolSN
Else
GetVolumn = ""
End If
End Function
前面的Declare陈述式宣告一个API函数（GetVolumeInformation），可取得磁碟机的两项资料。
全新的路由器不仅让你更稳定快速地连接无线网络，更可以让家中的智能设备连接在一起。
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