TABLE   wwwdb_state

FIELD	session_id      varchar(20)     not null
FIELD	key_name        varchar(100)    not null
#FIELD	key             varchar(100)    not null
FIELD	key_value       varchar(255)
FIELD	last_change     date

INDEX   PRIMARY       pk       session_id, key_name
#INDEX   PRIMARY       pk       session_id, key
INDEX   SECONDARY     sk_1     last_change
