Application Database is a storage used by MoveOnBoot to keep all business data. The database also contains the system catalog that stores the application events displayed in the Application Log view and other service information.
Application database location can be changed on Application Database preference page . To access this page click Preferences button from the Application Menu and select the appropriate link in the navigation bar on the left of the Preferences dialog.
On the page opened you can input new database location in Database Location field. Enable Create New or Switch to Existing option to ignore the current database. If this option is disabled than the current Application Database is moved to the location specified.