On 10/29/2016 09:47 AM, Rich Shepard wrote:
> On Sat, 29 Oct 2016, Tom Lane wrote:
>
>>> What does U1 represent?
>>
>> Unique constraint, perhaps? I'm just guessing.
>
> Tom,
>
> That's my guess, too. I've not seen it used before now and did not
> know if
> it's a standard code for something or one specific to this agency.
http://stackoverflow.com/questions/5628533/what-does-i1-i2-u1-means-in-visio-database-relationship-diagram
http://stackoverflow.com/questions/23533702/about-entity-relationship-diagram
>
> Thanks,
>
> Rich
>
>
--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com