On Sat, 29 Oct 2016, Adrian Klaver wrote:
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, Adrian. I suspected that I was not effectively expressing
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 t
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.
Thanks,
Rich
--
Sent via p
Rich Shepard writes:
>Looking at the entity-relationship diagram for a regulatory agency database
> they have attribute identifiers of PK, FKn, and U1. The first is the Primary
> Key and the second is a Foreign Key, but I've not before seen a 'Un'
> identifyier. I've no idea what DBMS they're
Looking at the entity-relationship diagram for a regulatory agency database
they have attribute identifiers of PK, FKn, and U1. The first is the Primary
Key and the second is a Foreign Key, but I've not before seen a 'Un'
identifyier. I've no idea what DBMS they're using (but suspect Oracle). My
