Explain the role of Model in ASP.NET MVC?

One of the core features of ASP.NET MVC is that it separates the input and UI logic from business logic. Role of Model in ASP.NET MVC is to contain all application logic including validation, business and data access logic except view, i.e., input and controller, i.e., UI logic.
Model is normally responsible for accessing data from some persistent medium like database and manipulate it.