Players(
pid (playerid) - int
pnick (playernick) - text
prace (player_race) -  text
pclass (Player_class) - text
plvl (Current level in game) - int
)

Sieges (
sid (siege id) - int
date - date
parties (number of parties) - int
)

Party (
ptid (partyid) - int
sid (siegeid) - int fk
)

Player_party (
ptid (partyid) - int fk
pid (playerid) - int fk
)