OPAs versus EEFs

sean9cody · 2012-05-30 00:54:42

I think I can understand the differences between OPAs and EEFs in most situations, except the following three described as EEFs and which keep coming up in exams: * HR & Personnel records * Commercial Databases (but not the data contained within) * PM Information Systems (but not Work Authorisation Systems) To me all three look like OPAs. Can anyone advise or point me to any links which can explain this so I can understand better? Sean