[openstack-dev] [Keystone] Domains, Projects, and Groups are all collections

David Chadwick d.w.chadwick at kent.ac.uk
Wed Jan 23 20:43:10 UTC 2013

On 23/01/2013 20:12, Adam Young wrote:
> but if group_id is going to point to more than one table, it can't be
> done as a foreign key.

We already have a solution for this in our attribute mapping work. A 
group can map to multiple roles, project, domains (ie. a set of workflow 



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