private void loadDB()
        {
            List <string> forumsNames = _db.ReturnForumsList();

            foreach (string forumName in forumsNames)
            {
                ForumPolicy     forumPolicy    = getForumPolicy(forumName);
                List <string>   subForumsNames = _db.ReturnSubForumList(forumName);
                List <SubForum> subForums      = new List <SubForum>();
                List <User>     forumUsers     = getForumUsers(forumName);
                foreach (string subForumName in subForumsNames)
                {
                    List <Post> threads = managePosts(forumName, subForumName, forumUsers);
                    SubForum    sf      = SubForum.create(forumName, subForumName, threads);
                    subForums.Add(sf);
                    getSubForumModerators(forumName, subForumName, forumUsers);
                }
                Forum f = Forum.create(forumName, forumPolicy, subForums);
                _fm.readForum(f);
            }
        }