Thanks for your response. We've already developed a business classification scheme that identifies a hierarchy of functionally based information including records, documents, digital, media, etc.
I work for Murdoch University so our "content" is quite broad. It can be "traditional" administrative information such as the ones you mentioned, but it could include a plethora of things related to partners, research, teaching, courses, etc from areas as diverse as veterinary science, law, theology, engineering and health science.
Our intention is to develop process models for specific business areas and develop a content model that supports those business processes.
thanks for your help.
Brad