https://stackoverflow.com/questions/23770497/insert-into-a-ms-access-query-built-from-two-tables-in-a-mysql-backend-with-a-on

https://jeffpar.github.io/kbarchive/kb/184/Q184749/

https://stackoverflow.com/questions/1628267/autonumber-value-of-last-inserted-row-ms-access-vba

https://dba.stackexchange.com/questions/131116/best-practise-for-polymorphic-associations-in-mysql

https://stackoverflow.com/questions/2002985/mysql-conditional-foreign-key-constraints