Operating without foreign key constraints — PlanetScale

December 5, 2023 OverviewA foreign key is a logical association of rows between two tables, in a parent-child relationship. A row in a "parent" table may be referenced by one or more rows in a "child" table. A foreign key typically suggests how you should JOIN tables in most queries. A table can also refer to itself, as a special case. A FOREIGN KEY constraint is a database construct, an implement