Model and Java Dictionary 

Model

This section provides an overview of data retrieval and business logic encapsulation in a Web Dynpro application.

You can use various different data sources for your Web Dynpro application. For a simple connection of a model, wizards are available that generate the relevant classes for your application.

You can define several models for each application. In a model declaration you define which model is to be the valid interface at runtime. With this reference, the application entity Web Dynpro component is addressed. More information is available under Referencing a Model.

The controllers are responsible for the data flow between the model and the other Web Dynpro entities. The data transport between the model and the controller is referred to as model binding – that is, there is a reference to the back-end data in the Web Dynpro application.

Java Dictionary

The Java Dictionary is a repository for the platform-independent definition of elementary data types and structures. In your Web Dynpro project, you can create, edit and use these data types and structures without having to leave the Web Dynpro perspective.