SQL:
Provider=SQLOLEDB.1;Password=123;Persist Security Info=True;User ID=as;Initial Catalog=aaa;Data Source=127.0.0.1
Access:
Provider=Microsoft.Jet.OLEDB.4.0;Data Source=test.mdb;Mode=ReadWrite;Persist Security Info=False
Excel:
Provider=Microsoft.Jet.OLEDB.4.0;Data Source=test.xls;Mode=ReadWrite;Extended Properties=Excel 8.0;Persist Security Info=False