Foreign keys affecting a table must be dropped in order to TRUNCATE the table. The Foreign Key button generates an alphabetical listing of foreign key information sorted by the foreign key name and ...

There are so many problems with foreign key constraints that we don't know where to start: Foreign key constraints make life very complicated, because the foreign key definitions must be stored in a ...

Foreign key 'geneassay_fk' references invalid column 'geneassay' in referencing table 'b_SequencingData_seq'. Msg 1750, Level 16, State 0, Line 43 Could not create constraint.

When I am working with an Oracle database, I still find myself using SQL*Plus for many quick and dirty database queries. In particular, I often look up constraints in SQL*Plus. In this post, I ...

I've worked on several large SQL systems and while I've seen plenty of foreign key constraints in use I've never actually seen them do anything besides cause problems during dataloads and ad-hoc ...