How can I use the mySQL databases ?

This form is for question : that if I can use the databases for a search field on the free type site, OR I need the premium for that ?

I make a php file in dreamweaver, but it seems the code it’s not working in any way. Do I really need to upload the file on server to work, like it say in the error 404 ?
Any sugestion ?

Our databases are MySQL databases. You can use most MySQL compatible PHP scripts here. There are tons of tutorials on line which explain how to use MySQL from a PHP script.

But if you want the code to work, you do need to upload it, of course.