The cross reference use case implements an integration scenario between two end-system Oracle EBS and SAP instances. In this use case, the order passes from SAP to EBS. SAP represents the orders with a unique ID, whereas EBS splits the order into two orders: ID1 and ID2. This scenario is created using database adapters. When you poll the SAP table for updated or created records, an SAP instance is created. In EBS, the instance is simulated by a procedure and the table is populated. Figure 44-46 provides an overview of this use case.