Explanation/Reference:
A: When creating an entity object using the Business Components from Tables wizard or the Create Entity
Object wizard, an entity object can represent an underlying table, synonym, or view.
On the Updatable View Objects page of the wizard, you can create view objects that query data from the
entity objects.
B: On the Application Module page of the wizard, select the Application Module checkbox.
To place the application module into its own package, change the Package to model.services .
C: The simplest way to create entity objects and associations is to reverse-engineer them from existing
tables. To create an entity object, use the Business Components from Tables wizard.
References: https://docs.oracle.com/cd/B31017_01/web.1013/b25947/bcentities002.htm
http://www.oracle.com/technetwork/testcontent/bslayer-095695.html