A foreign key integrity constraint links the data values of one or more variables in its data file to those of the variables specified in a primary key, and controls the action that can be taken when ...

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 ...

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 ...

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.

Can you do a foreign key within a single table, though? I've only ever seen foreign key constraints tying a field in one table to a field in another table.