process_id
(primary key)

VARCHAR(40)

not null

The ID of the process to which the history element is associated.

sequence_num
(primary key)

NUMERIC(19)

not null

The sequence number which determines the ordering of the history element in relation to the other history elements in the same process.

history

VARCHAR(40)

not null

The ID of the related history element in the process whose ID is in the process_id column.