Browsing Online Databases and Offline Schemas

You can view database objects from three different navigator windows:

To view database objects through a real time connection (online database), use the Connection Navigator.
To view offline database objects, use the Application Navigator. Changes to database objects in projects (i.e. visible via Application Navigator or System Navigator) can be reconciled against a live database, but until reconciliation, no changes to the offline objects affect online databases. For more information, see Browsing Offline Schemas and Working with Offline Database Definitions.

To open a navigator:

Select View from the main toolbar.
Select the navigator that displays the online or offline database objects you wish to view.