To develop software of lasting quality you have to lay down a solid architectural foundation that is resilient to change. Modelling is at the heart of the development of good quality software. The Unified Modelling Language has become a standard software modelling language standardised by the Object Management Group (OMG).
To enable effective modelling to develop software systems, UML employs the concepts of the object-oriented paradigm.
With reference to the above answer the following questions.
(a) What is a model?
(b) Why do we model?
(c) Explain in detail, four principles of modelling?