Clearly, information systems that claim to support managers cannot be built unless one understands what managers do and how they do it. The classical model of what managers do, espoused by writers in the 1920's, such as Henry Fayol, whilst intuitively attractive in itself, is of limited value as an aid to information system design. The classical model identifies the following 5 functions as the parameters of what managers do (Agnilar, 1967):
1 Planning
2 Organising
3 Coordinating
4 Deciding
5 Controlling
Such a model emphasises what managers do, but not how they ...