Question:Define Model, View and Controller? 

Answer Model: The Model represents data structures. Typically model classes will contain functions that help to retrieve, insert, and update information in database.View: The View is the information that is being presented to a user. A View will normally be a web page, but in CodeIgniter, a view can also be a page fragment like a header or footer. It can also be an RSS page, or any other type of "page".Controller: The Controller serves as an intermediary between the Model and the View, and any other resources needed to process the HTTP request and generate a web page. 

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Define Model, View and Controller?
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