What is the difference between ADO and ODBC ?

[ciamack]

Regarding CGI programing:

I am new to DB in Perl and I'm not sure what the difference between these 2 methods below is. I have a MS access mdb file with tables and data on a server. I can't ask my ISP to create a DSN for me. I have used "method2" below and it works fine.

• I wonder if these methods are multi threading?
• If several users access access my DB at the same time it will function properly?

Thank you in advance.

method 1:

use Win32::OLE;

$ConnStr = "DSN=DsnName;UID=UserName;PWD=pass; 
            APP=PerlTest;WSID=MyComp;DATABASE=MyDB";

$Conn = Win32::OLE->new('ADODB.Connection'); 
$Conn->Open($ConnStr);

method 2:

use Win32::ODBC;

$DriverType = "Microsoft Access Driver (*.mdb)"; 
$DSN = "Win32 ODBC --MAOmaoMAOmaoMAO--"; 
$Dir = "c:\\perl\\cgi-bin"; 
$DBase = "mydb.mdb";

Win32::ODBC::ConfigDSN(ODBC_ADD_DSN, $DriverType, 
    ("DSN=$DSN", "Description=MAO Win32 ODBC Test DSN for perl", 
    "DBQ=$Dir\\$DBase", "DEFAULTDIR=$Dir", "UID=", "PWD=")) 
    or die "ConfigDSN(): Could not add temporary DSN" . 
    Win32::ODBC::Error();

    $db=new Win32::ODBC($DSN) or die "couldn't ODBC $DSN because", 
    Win32::ODBC::Error(), "\n";

Originally posted as a Categorized Question.