PPPoE and HotSpot

Hi,
I want to create my own user manager !
So, I want to know that is there any MySql server or any database in Mikrotik ???
if yes so, what is the port of MySql server or what is the name of database ???

i m waiting for your replies

Thanx

The source code for UM is unfortunately not open. Your best bet would be to use FreeRADIUS or similar. Otherwise, make use of UM and use some scripts you could easily find on this forum. Why would you like to create your own UM? Is it to modify your GUI, or do you need to add certain features?