#24289: Is usage of many_to_one and one_to_many terms confusing for relation
flags?
-------------------------------------+-------------------------------------
Reporter: akaariai | Owner: nobody
Type: Bug | Status: closed
Component: Database layer | Version: 1.8alpha1
(models, ORM) |
Severity: Normal | Resolution: invalid
Keywords: | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by freakboy3742):
For the record - This came up during the meta refactor work as well. I
agree it's confusing. But the thing is, *either* way is going to confuse
someone.
As currently defined, ForeignKeys are One-to-many, based on the
interpretation that there is "one" value on the side that defines them,
and "many" on the other side. However, it's easy to look at it the other
way, and say that a ForeignKey is defining the fact that there where it is
defined, it's going to point to "many" objects, and on the other side, it
will point to "one" object.
It's worth noting that this same confusion exists in various
[http://en.wikipedia.org/wiki/Entity–relationship_model#Cardinalities
Entity-Relationship diagram notations] - the side on which you put the
visual "many" varies (c.f. Martin/Crow foot and IDEF1X notation).
So, for me, this is a bikeshed; however, it's a bikeshed with a precedent
that goes back 10 years, so I'd be against changing it.
--
Ticket URL: <https://code.djangoproject.com/ticket/24289#comment:2>
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