Relationships REST Endpoints

Object Metadata/Child Object Metadata/Relationships
The relationships resource is used to view, create, update, and delete a relationship. It represents relationships defined on all objects.
Get a relationship
Method: get
Path: /crmRestApi/resources/11.13.18.05/objectMetadata/{ObjectCode}/child/childObjectMetadata/{ObjectCode2}/child/relationships/{RelationCode}
Get all relationships
Method: get
Path: /crmRestApi/resources/11.13.18.05/objectMetadata/{ObjectCode}/child/childObjectMetadata/{ObjectCode2}/child/relationships