[MUD-Dev2] DESIGN: Best way of keeping map and game state information.

[Eduardo]

Hi all,
I am new in that list. I am interested on developing a MMORPG, just for
learning and fun. Im at design phase, and i have some doubts about how to
keep the map and game state information in general. Whithout entering deeper
in tecnical issues, should i use dinamic databases for keeping all this
information, updating them in real time, or it is possible to keep that huge
amount of data in memory. The problem with databases is the I/O heavy load
so i dont know if it woud delay too much the game ?Someone that have dealt
with that topic and want to share their knowledge?
(Sorry for my english if its not too correct)