Building Entity Services Using Service Data Objects (SDOs) - Oracle SOA Suite 11g R1 Developer's Guide - page 365

Defining updatable View objects
In the second step, we specify the Entity objects for which we want to create an
Updatable View Object . As we want to be able to create and update both LISTING
and BID entities through our ListingSDO, we need to create a corresponding View
object for each of them. So select both BidView (Bid) and ListingView (Listing) , as
shown in the following screenshot:
Click on Next ; this will take us to the Read-Only View Objects window. At this
point, we do not want to create any read-only views, so click Next .
Defining the application module
In the fourth step, we can specify an appropriate name for the Application Module .
Remember that this will provide the Entity service for our updatable views, so we
should name it appropriately, for example, ListingSDO .