`role_id` int(11) default NULL, # role id
`client_id` int(11) default NULL, # client id for "client" user role
`rate` float(6,2) NOT NULL default '0.00', # default hourly rate
`role_id` int(11) default NULL, # role id
`client_id` int(11) default NULL, # client id for "client" user role
`rate` float(6,2) NOT NULL default '0.00', # default hourly rate