`date` date NOT NULL, # date the record is for
`start` time default NULL, # record start time (for example, 09:00)
`duration` time default NULL, # record duration (for example, 1 hour)
`date` date NOT NULL, # date the record is for
`start` time default NULL, # record start time (for example, 09:00)
`duration` time default NULL, # record duration (for example, 1 hour)