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Step 6: Creating an Application Module An application module represents a task you want to accomplish within a single transaction, such as entering a new customer to the database, or creating an online order. The application module contains all the elements the UI might need to display or manipulate to complete this task. The objects necessary to perform a particular task are organized in the application module's data model. A data model is a graphical representation of the objects needed to perform a particular task, and how they are related. In the following step, you'll create a new application module, OrderModule. This application module will contain only those views that are required to place an order. In the data model, you'll add the master-detail view link that you created, which coordinates Orders and OrderItems. This way, when you select an order, you'll see all the line items contained by the order. To create a new application module: 1- In the System Navigator, right-click your package node and choose New Application Module.The Application Module Wizard opens. 2- Review the information on the Welcome page and click Next. 3- On the Name page, enter OrderModule and click Next. 4- In the Available View Objects pane, select OrdersView and shuttle it to the Data Model pane. 5- In the Data Model Pane, click OrdersView to select it. 6- In the Available View Objects pane, select OrderItemsView via OrdersViewLink. 7- Click the shuttle button to move it to the Data Model pane.8- Click Finish. Your new OrderModule application module now contains the view objects necessary to create a new order. While your business logic tier is far from being complete, you can already run a client to test what you've done. In the next step, you will use the Business Component Browser to test the business logic tier.
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