In a simple banking system, one candidate for the role of an ‘object’ might be a customer account. Consider how each of the four major viewpoints might be used in modelling the operation of a bank...

In a simple banking system, one candidate for the role of an ‘object’ might be a customer account. Consider how each of the four major viewpoints might be used in modelling the operation of a bank account, and suggest forms that might be suitable for each viewpoint. (There is scope for using inheritance here, too, in that the bank may provide different forms of account, and although each will provide certain standard methods, the details of these might vary with the type of account involved.)