Associations define relationships between entities.
- In the left pane, double-click the Associations node.
- In the right pane, click the Append Row button twice and enter Associations named BusinessPartner_SalesOrder and SalesOrder_SalesOrderItem.
- Enter the Principal Entity and Dependent Entity and corresponding Cardinalities as
The cardinality fields for each association reflect a one-to-many (1 to M) relationship between the principal and dependent entities. In this case, a business partner can have many sales orders and a sales order can have many sales order items.