Database programming in C++

Hi,
I am looking for help about the different database technologies that can be used on Visual C++.

I would appreciate if anyone could give me a link or something to understand the real differences between DAO, ODBC, ADO and OLE DB. I have used ODBC, but as far as I know, ADO is the newest technology that has been developed.

What about compatibility? On mySQL, I think ODBC is the only one that is officially supported.

Any comments about this are welcome.

Thanks in advance.