already shown Fig. 4.10. The time stamp column shows the date and time associated
to the event. The other attributes column shows additional attributes. Depending
on the type of activity, different attributes are recorded. Table 4.6 shows that there
is quite some redundancy in the event log. This is partly unavoidable due to the
structure that logs should have. However, the case attributes Customer and John do
not need to be repeated for each event; one could have used case attributes rather
than event attributes.