MVC Architecture
Model View Controller

Model-view-controller (MVC) is a software architecture that separates an application's data model, user interface, and control logic into three distinct components so that modifications to one component can be made with minimal impact to the others.

MVC is often thought of as a software design pattern. However, MVC encompasses more of the architecture of an application that is typical for a design pattern. Hence the term architectural pattern may be useful (Buschmann, et al 1996), or perhaps an aggregate design pattern.


source: http://en.wikipedia.org/wiki/Model-view-controller