Cascade and Not Null
It would be nice to be able to set the foreign keys to 'not null' (like it is possible to set a property 'not null').
It would also be nice to have the option to set the 'on update' and 'on delete' relationships to cascade and set to null.
It would also be nice to have the option to set the 'on update' and 'on delete' relationships to cascade and set to null.