From: James Robertson (james@systemsguild.com)
Date: Tue Feb 08 2000 - 15:46:04 EST
Jorge,
> If you follow McMenamin, and later Ward and Mellor, your event list should
> suffice to get the essential entities. A full functional analysis is too
> expensive if the intent is a first cut of the ERD for checking purposes.
I am sorry but I think that is a little simplistic If the events are at all
complex, then the entities are not necessarily apparent. I believe that it
is far safer to do at least a preliminary event response model before
selecting the entities. I don't believe that McMenamin, Ward or Mellor ever
wrote that the event list revealed the entities, nor have they said that in
conversations subsequent to their books.
James
________________________________________________
James Robertson
the Atlantic Systems Guild
james@systemsguild.com
www.systemsguild.com
Mastering the Requirements Process by Suzanne and James Robertson
foreword by Jerry Weinberg
published by Addison-Wesley
ISBN 0-201-36046-2
www.awl.com/cseng
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