As the others have said, the docs cover everything you need to know about what functions are available. If you read perldoc DBI you will get 99% of the knowledge that you need to communicate effectively with whichever database you are using on the backend. The number of functions available to you are too numerous to enumerate here, but there is a lot more than just fetchrow_array as I'm sure you've figured out. Not sure how the perldocs work on windows, but on a nix just

perldoc DBI
[download]

and since DBI is a module, the full documentation is available over on CPAN: DBI