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Added 'Does Django support multiple-column primary keys?' to FAQ 

git-svn-id: http://code.djangoproject.com/svn/django/trunk@2204 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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Adrian Holovaty 2006-01-31 21:38:02 +00:00
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@ -363,6 +363,18 @@ avoid automating. That said, there's some work being done to add a
``django-admin.py updatedb`` command, which would output the necessary
``ALTER TABLE`` statements, if any.
Do Django models support multiple-column primary keys?
------------------------------------------------------
No. Only single-column primary keys are supported.
But this isn't an issue in practice, because there's nothing stopping you from
adding other constraints (using the ``unique_together`` model option or
creating the constraint directly in your database), and enforcing the
uniqueness at that level. Single-column primary keys are needed for things such
as the admin interface to work; e.g., you need a simple way of being able to
specify an object to edit or delete.
The database API
================