How to enforce that one row in a parent table MUST be associated with at least a row in a child table
19736
How to have a one-to-many relationship with a privileged child?
85789
Not using foreign key constraints in real practice. Is it OK?
133175
error: SELF_REFERENCE_FROM_TRIGGER while updating child records
94540
Issues with a complex table
41680
Pair of 2-tuple composite FKs pointing to same table (closure table pattern)
112312
Create unique sequence per set of rows sharing the same foreign key value
113811
Hibernate recursive many-to-many association with the same entity
52414
Can a Child Category Have More than One Parent?
10831
Join table depending on value of column in main table
102382
Cannot add a nested relation or an element column to a table containing a SimpleContent column
57222
MS SQL "ON DELETE CASCADE" multiple foreign keys pointing to the same table?
33176
Can I have multiple primary keys in a single table?
59387
error altering table, adding constraint foreign key getting error "Cannot add or update a child row"
46694
Foreign key referring to primary keys across multiple tables?
103208
How to prevent creation of records where the value of two fields is the same?
51714
One-to-many spatial join with results in one row
39314
Parent and children relationships accessible via trigger?