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Private Sub cmdBinary_Click() Dim conDatabase As ADODB.Connection
Dim SQL As String
On Error GoTo Error_Handler
Set conDatabase = Application.CurrentProject.Connection
×¢Òâ: Fields 1 through 4 can be created through both
SQL View and the Jet OLEDB Provider.
Fields 5 and 6 can only be created through the
Jet OLE DB provider.

SQL = "CREATE TABLE tblCodeBinaryDataTypes (" & _
"Field1_BINARY BINARY, " & _
"Field2_BINARY250 BINARY(250), " & _
"Field3_VARBINARY VARBINARY, " & _
"Field4_VARBINARY250 VARBINARY(250), " & _
"Field5_BVARYING BINARY VARYING, " & _
"Field6_BVARYING250 BINARY VARYING(250))"
conDatabase.Execute SQL
MsgBox "The BINARY datatypes table has been created!"
conDatabase.Close
Set conDatabase = Nothing
Exit Sub
Error_Handler:
MsgBox Err.Description, vbInformation
End Sub


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SQL = "ALTER TABLE tblInvoices " & _
"ADD CONSTRAINT FK_tblInvoices " & _
"FOREIGN KEY NO INDEX (CustomerID) REFERENCES " & _
"tblCustomers (CustomerID) " & _
"ON UPDATE CASCADE " & _
"ON DELETE CASCADE"


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×¢Ò⼶ÁªÐÔ¸üкÍɾ³ýÑ¡ÏîÒѾ­±»ÉèÖá£
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ÔÚÖм¶DMLÓï¾äµÄ´°ÌåÖеÄCreate Customers DatabaseÊä³öÖ¸ÁîºÍ°´¼üչʾÁËÒ»¸ö¶ÔSELECT INTO Óï¾äµÄÓÐȤӦÓá£ÕâÊÇÒ»¸ö¸æËßÄãʹÓÃÖм¶SQL Óï¾äËùÄÜÍê³ÉµÄ¸÷ÖÖÊÂÇéµÄÒ»¸öºÃµÄÀý×Ó¡£ÏÂÃæ¾ÍÊǹØÓÚÊä³öÃüÁîºÍ°´¼üµÄ×Ó¹ý³ÌµÄ´úÂ룺

Private Sub cmdCreateDB_Click()
Dim conCatalog As ADOX.Catalog
Dim conDatabase As ADODB.Connection
Dim SQL As String
Dim sDBName As String
On Error GoTo Error_Handler
Initialize objects & variables.
Set conDatabase = Application.CurrentProject.Connection
Set conCatalog = New ADOX.Catalog
sDBName = "C:\Customers.mdb"
Create the Customers database.
conCatalog.Create "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=" & sDBName
Run the DML statement to build the Customers table.
SQL = "SELECT * INTO tblCustomers IN " & sDBName & _
"" & "FROM tblCustomers"
conDatabase.Execute SQL
MsgBox "The new CUSTOMERS database has been created " & _
"as " & sDBName & ".", vbInformation
conDatabase.Close
Set conDatabase = Nothing
Set conCatalog = Nothing
Exit Sub
Error_Handler:
MsgBox Err.Description, vbInformation
End Sub


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