Rich Shepard <rshepard@xxxxxxxxxxxxxxx> 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 using (but suspect Oracle). My > web search used in-effective terms so I could not find the answer there. > What does U1 represent? Unique constraint, perhaps? I'm just guessing. regards, tom lane -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
