(a) Explain, using suitable examples, the functions of each of the sub system mentioned in the context of a large chain of supermarkets
(i) Database Management Subsystem
(ii) A model Management Subsystem
(iii) A User Interface Subsystem and
(iv) a Knowledge management subsystem. Explain briefly the functions of each of the subsystem mentioned.
(b) What is sensitivity analysis and when is it used?
(c) Explain three capabilities of an executive support system.