Table Definition

Field	Type	Default	Nullable
`job_ref`	`varchar2(50)`
`resp_unit_no`	`number`
`timestamp`	`date`
`message_content`	`blob`

Keys

primary key (job_ref, timestamp)

foreign key (job_ref) references sp111_jobs (job_ref)

foreign key (resp_unit_no) references sp058_responsibility_units (resp_unit_no)

Field	Description
`job_ref`	The `job_reference` (from `sp111_jobs`).
`resp_unit_no`	The responsibility unit to which the job is booked.
`timestamp`	The timestamp at which the change occurred (UTC).
`message_content`	A `blob` of data relating to the change.