Hi Professor Sun,

i am running into issues with discriminators - hibernate is giving me an error about not being able to create the set of assignments that are contained within the Section class because Assignment does not have a discriminator.  When I go to add a discriminator to Assignment, I get errors from the db side saying that there is no discriminator column.

So, I added a discriminator column, but that puts the sql-test-insert script out of date.  Should I be updating that script as well, or is this a sign that I should be taking another approach?

Thanks.

Thank you!