IT533 - SOFTWARE ARCHITECTURES - CLASS 3
TEMPORAL STIMULI AND PRACTICAL EVENTS
A decision must be made with respect to which processor watches
the clock to trigger a temporal event.
The following guidelines can help determine how a temporal
event is triggered:
- If all of the response for the event can be delivered using
automated technologies, then a processor in the automated partition
could watch the clock and stimulate the event.
Example:Each night, the automated inventory system
electronically sends orders to suppliers to order replacements.
- If one or more of the responses must be delivered manually,
then it is usually best to have a processor (human) in the manual
partition watch the clock and manually stimulate the automated
partition to produce the responses.
The vice-president of sales expects a printed prior month sales summary
by the third business day of the new month.
Note that this is a delegation pattern because this
is an automation boundary choice.
Prepared by David L. March -- Last Revised on September 11, 2000
COPYRIGHT © 2000 BY DAVID L. MARCH