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<div class="moz-cite-prefix">On 03/10/2015 10:23 AM, Mike Bayer
wrote:<br>
</div>
<blockquote
cite="mid:8BCA2461-7154-46CC-B8F4-A7D81568221F@redhat.com"
type="cite">
<pre wrap="">if <b class="moz-txt-star"><span class="moz-txt-tag">*</span>that’s<span class="moz-txt-tag">*</span></b> what you mean, that’s known as a “polymorphic foreign key”, and
it is not actually a foreign key at all, it is a terrible antipattern started by
the PHP/Rails community and carried forth by projects like Django. </pre>
</blockquote>
A) Heh. it is much, much older than that. SQL Database have been
around for long enough for these antipatterns to be discovered and
rediscovered by multiple generations. I'm aware of the mean by
which we cn mitigate them. <br>
<br>
But that is not what we are doing here. These are no "parity"
issues even. It is distributed data.<br>
<br>
User sand Groups are in, not just one LDAP server, but many. With
Federation, the users will not even be in a system we can
enumerate. Which is good, we should never have been allowing "list
users" in the first place.<br>
<br>
What the Assignments table is doing is pulling together the User and
groups from remote systems together with role defintions and project
definitions in the local database. The data is not in one
database. It is in Many.<br>
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