<html>
<head>
<meta content="text/html; charset=windows-1252"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<div class="moz-cite-prefix">On 03/08/2015 02:28 PM, Morgan Fainberg
wrote:<br>
</div>
<blockquote cite="mid:etPan.54fc94d5.6b8b4567.1584@nullptr"
type="cite">
<style>body{font-family:Helvetica,Arial;font-size:13px}</style>
<div id="bloop_customfont"
style="font-family:Helvetica,Arial;font-size:13px; color:
rgba(0,0,0,1.0); margin: 0px; line-height: auto;">On March 8,
2015 at 11:24:37 AM, David Stanek (<a moz-do-not-send="true"
href="mailto:dstanek@dstanek.com">dstanek@dstanek.com</a>)
wrote:</div>
<div>
<blockquote type="cite" class="clean_bq" style="color: rgb(0, 0,
0); font-family: Helvetica, Arial; font-size: 13px;
font-style: normal; font-variant: normal; font-weight: normal;
letter-spacing: normal; line-height: normal; orphans: auto;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px;"><span>
<div>
<div>
<div dir="ltr">
<div class="gmail_extra">
<div class="gmail_quote"><br
class="Apple-interchange-newline">
On Sun, Mar 8, 2015 at 1:37 PM, Mike Bayer<span
class="Apple-converted-space"> </span><span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:mbayer@redhat.com"
target="_blank">mbayer@redhat.com</a>></span><span
class="Apple-converted-space"> </span>wrote:<br>
<blockquote class="gmail_quote" style="margin: 0px
0px 0px 0.8ex; border-left-width: 1px;
border-left-color: rgb(204, 204, 204);
border-left-style: solid; padding-left: 1ex;">
<div id=":1yx" class="a3s" style="overflow:
hidden;">can you elaborate on your reasoning
that FK constraints should be used less<br>
overall? or do you just mean that the client
side should be mirroring the same<br>
rules that would be enforced by the FKs?</div>
</blockquote>
</div>
<br>
I don't think he means that we will use them less.
Our SQL backends are full of them. What Keystone
can't do is rely on them because not all
implementations of our backends support FKs.</div>
</div>
</div>
</div>
</span></blockquote>
</div>
<p>100% spot on David. We support implementations that have no
real concept of FK and we cannot assume that a cascade (or
restrict) will occur on these implementations.</p>
</blockquote>
<br>
And even if the back ends do, we split behavior across identity,
assignments, and resources ,and FKs cannot cross those; Thety can
and will vary independently.<br>
<br>
<blockquote cite="mid:etPan.54fc94d5.6b8b4567.1584@nullptr"
type="cite">
<p><br>
</p>
<p>—Morga</p>
<div>
<blockquote type="cite" class="clean_bq" style="color: rgb(0, 0,
0); font-family: Helvetica, Arial; font-size: 13px;
font-style: normal; font-variant: normal; font-weight: normal;
letter-spacing: normal; line-height: normal; orphans: auto;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px;"><span>
<div>
<div>
<div dir="ltr">
<div class="gmail_extra">
<div><br class="Apple-interchange-newline">
<br>
</div>
--<br>
<div class="gmail_signature">David<br>
blog:<span class="Apple-converted-space"> </span><a
moz-do-not-send="true"
href="http://www.traceback.org" target="_blank">http://www.traceback.org</a><br>
twitter:<span class="Apple-converted-space"> </span><a
moz-do-not-send="true"
href="http://twitter.com/dstanek"
target="_blank">http://twitter.com/dstanek</a>
<div>www:<span class="Apple-converted-space"> </span><a
moz-do-not-send="true"
href="http://dstanek.com" target="_blank">http://dstanek.com</a></div>
</div>
</div>
</div>
__________________________________________________________________________<span
class="Apple-converted-space"> </span><br>
OpenStack Development Mailing List (not for usage
questions)<span class="Apple-converted-space"> </span><br>
Unsubscribe:
<a class="moz-txt-link-abbreviated" href="mailto:OpenStack-dev-request@lists.openstack.org?subject:unsubscribe">OpenStack-dev-request@lists.openstack.org?subject:unsubscribe</a><span
class="Apple-converted-space"> </span><br>
<a class="moz-txt-link-freetext" href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev">http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev</a><span
class="Apple-converted-space"> </span><br>
</div>
</div>
</span></blockquote>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">__________________________________________________________________________
OpenStack Development Mailing List (not for usage questions)
Unsubscribe: <a class="moz-txt-link-abbreviated" href="mailto:OpenStack-dev-request@lists.openstack.org?subject:unsubscribe">OpenStack-dev-request@lists.openstack.org?subject:unsubscribe</a>
<a class="moz-txt-link-freetext" href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev">http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev</a>
</pre>
</blockquote>
<br>
</body>
</html>