A. Add an external data source (from the storyboard)
* Search for the needed service.
* Add the data model to the application
* Add a service (from the storyboard)
* Add a new lead entity to the service
* Add a relationship to the external data source entity

B. Add an external data source (from the storyboard)
* Add a service (from the storyboard)
* Add a new lead entity to the service
* Add a relationship to the external data source entity
* Search for the needed service.
* Add the data model to the application

C. Add an external data source (from the storyboard)
* Add the data model to the application
* Add a service (from the storyboard)
* Add a relationship to the external data source entity
* Add a new lead entity to the service

D. Open API Business Hub web site
* Search for the needed service
* Download the service metadata file
* Upload the metadata file to Business Application Studio
* Add a service (from the storyboard)
* Add a relationship to the external data source entity