Le 2010-09-29 à 06:42, Theodore Petrosky a écrit :

> I am altering a project (adding a relation) and I don't understand the 
> "Flatten relationship" option.
> 
> this will be a many to many. I just don't understand what flattening does. I 
> started googling and so far the answers don't click.
> 
> what's happening in a flattened vs an un-flattened relationship.

Flattened means that the table in the middle (that only holds the keys to join 
the two other tables) is "hidden" in the EOs, and when you create a new object 
in one of the two tables, the join table will automatically be populated.

So let's say you have a People and a Job tables, and the join table is 
People_Job, to add a new job to a person, you do :

  aPerson.setRelationJob(newJob)

No need to do aPerson.setRelationshipPeopleJob(new PeopleJob). 
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