You can create an application from scratch, or you can create it as you deploy an object. When you create an application from scratch, you select objects to include in the application. You can add objects such as mappings and physical data objects.

You cannot add a logical data object directly to an application. However, you can create applications for web services and SQL data services that contain logical data objects.

You can validate an application. Whether or not an application is valid depends on the validity of the objects it contains. For example, the configuration of links between objects in a mapping must be valid for the application that contains the mapping to be valid. When an application is not valid, errors appear in the Validation Log view or in an error dialog box.