Foreign key can references multiple tables?
26537
Possible to do a MySQL foreign key to one of two possible tables?
142282
How to associate a user to multiple scheme of a database?
153310
Composite primary key from multiple tables / multiple foreign keys
60528
What's wrong with foreign keys?
26856
How do I specify unique constraint for multiple columns in MySQL?
89573
Can we have the table name as "option" in MySQL?
146077
Postgres view column references
85789
Not using foreign key constraints in real practice. Is it OK?
99717
Foreign key constraint on array member?
67735
How can I find which tables reference a given table in Oracle SQL Developer?
110417
What can go wrong using the same sequence across multiple tables in postgres?
33176
Can I have multiple primary keys in a single table?
158985
Can a foreign key be NULL and/or duplicate?
55545
Find the Foreign Keys Associated with a Given Primary Key
80490
Does MySQL foreign_key_checks affect the entire database?
151416
MySQL, update multiple tables with one query
36642
Compound primary key in Table type variable