Re: database concept help
Re: database concept help
- Subject: Re: database concept help
- From: Theodore Petrosky <email@hidden>
- Date: Wed, 29 Sep 2010 06:14:37 -0700 (PDT)
so I am creating a little test.
I have a People and a Job entity.
attributes:
People has a personName attribute
and
Job has a jobtitle
I created the many to many selecting the Flatten Relationship option.
I get a new entity: PeopleJob
so far so good.
I see in _Job.java a method:
addToPeoplesRelationship but no 'set'. Was that a typo on your part?
I am going to continue playing with my test app and see where it leads me.
thanks for the help.
Ted
--- On Wed, 9/29/10, Pascal Robert <email@hidden> wrote:
> From: Pascal Robert <email@hidden>
> Subject: Re: database concept help
> To: "Theodore Petrosky" <email@hidden>
> Cc: email@hidden
> Date: Wednesday, September 29, 2010, 6:47 AM
>
> 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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