pokeroffice

[hoho]

hello,i don't speak english very well so sorry for the bad english.

i want to change the Database engine to mysql but
there is two different mysql ,what is the best?

Do you know if deleting database from limit where i don't play anymore could help pokeroffice to work more quikly in the limit where i play now?if yes how could i do that?well i know how to delete all the database but not paticular limit database only?