The database tables descriptions are as follows.1) db table "chat" description.+-----------+--------------+------+-----+---------------------+----------------+| Field | Type | Null | Key | Default | Extra |+-----------+--------------+------+-----+---------------------+----------------+| __id | int(4) | | PRI | NULL | auto_increment || sesId | varchar(128) | | | | || user | varchar(64) | | | | || room_name | varchar(128) | | | Main Room | || __login | datetime | | | 0000-00-00 00:00:00 | || __logout | datetime | | | 0000-00-00 00:00:00 | || ip | varchar(15) | | | 000.000.000.000 | |+-----------+--------------+------+-----+---------------------+----------------+2) db table "rooms" description+-------------+--------------+------+-----+-----------------+----------------+| Field | Type | Null | Key | Default | Extra |+-------------+--------------+------+-----+-----------------+----------------+| __id | int(4) | | PRI | NULL | auto_increment || room_name | varchar(128) | | | Main Room | || creator | varchar(64) | | | | || no_of_users | int(3) | | | 0 | || ip | varchar(15) | | | 000.000.000.000 | || status | tinyint(1) | | | 0 | |+-------------+--------------+------+-----+-----------------+----------------+