References - OData - Select 1:1 relationships
Create OData external data group
References tab / Add reference
Reference properties - continue to Relationships
If another external data group from an OData connection is referenced in an
OData external data group
then a 1:1 relationship can be established
between these, provided that a corresponding relationship is defined in
the service metadata.
With a 1:1 relationship between two OData external data groups (OData
terminology: Entity Sets) no primary and foreign keys need to be
determined. In OData references, the relationship type is determined
and selected directly from the metadata of the OData Service.
Thus, for example, the possible relationships between a seminar and a
room booking are automatically determined by the Connector for OData from the
service metadata and made available for selection.