ISM 672 - Application design (Singh)

It is a software architecture used in app development. It is designed to manage the complexity of applications by separating the "layers" of code based on their function.  The model layer implements domain-specific logic including business rules; the view implements any visual interactions (inputs and outputs); and the controller is the middle-ware that manages access to data (create, read, update, delete) and provides information to the input through the model.

• Model - represents the application data
• View - represents the presentation on the UI layer
• Controller - (the brains) business logic of the application

• object relational mapping
• Converts data between incompatible type systems to bridge the gap

• EF is an object-relational mapper that enables developers to work with a database using .NET objects. It eliminates the need for access code that developers usually need to write.

...to manage the complexity of applications by separating the "layers" of code based on their function (model, view, controller).

• User-generated events may cause a controller to change the model, or view, or
• both. For example, suppose that the model stored the text that is being edited by the
• end-user. When the user deletes or adds text, the controller captures the changes and
• notifies the model. The view, which observes the model, then refreshes its display,
• with the result that the end-user sees the changes he/she made to the data. In this
• case, user-input caused a change to both the model and the view.