As we are all aware that ADF BC View Object provides us the way to create view object based on joins using various association between Entity Object.
Inner Join – If row exist in both entities
Left outer Join – All row from first entity object are returned no matter row are there in second entity or not.
Right outer Join – All row from second entity object are returned no matter row are there in first entity or not.
Reference Entity :- This is most commonly used to get the information from other entity for display purpose.
Reference entity is displayed in readonly mode.