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1.Web dynpro View 

  •  It is a central logical layout element in the Web Dynpro application of sap system. It is helping  in the presentation logic and for the browser layout.
  • Description of a visible screen area
  • Contains and lays out controls (aka widgets)
  • Defines actions (i.e. relevant input on controls by the user), which trigger event handling

2. Web dynpro Controller 

  • It is a active part of web dynpro application,handles the data flow between the model and the view in both directions:
  • Performs event handling
  • Each component has a component controller
  • Each view has a view controller
  • Custom controllers may be added for further structuring

3. Web dynpro Model

  • It is the interface to the back end system and is responsible for providing data to the entire application.
  • Represents the data in the back end

4. Web dynpro Component

  • Reusable UI program package
  • Mostly contains views, often uses models
  • Communicates with other components via component interfaces

5. web dynpro Application

  • Something can be run (from client application, i.e. web browser)
  • Identified by URL
  • Running an application means starting a component, navigating” to an initial view in an initial window.

6. Windows

Single UI unit representing a component’s user Interface/View Composition needed for embedding purposes.

7. Context

A controller contains a context which holds the data. The data flow between the contexts is referred to as context mapping..