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.
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...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.