First, you need to read the documentation.
Because obviously you don't have any idea what is PHP, MySql, and DreamWeaver is.
You cannot create MySql databases in DreamWeaver using PHP!
PHP is a dynamic language, MySql is a database engine, and DreamWeaver is just a development environment.
PHP usually runs in Apache server, but can also run in IIS if properly configured.
MySql is a stand-alone host that runs/processes database instances.
DreamWeaver is just a scripting/designing tool.
