To learn and explore:
You are to complete the missing parts in the files that your received. The given partial implementation is an inheritance structure containing various connectors. Your main task is to implement missing adaptation clauses (redefine, undefined, rename, select) where needed.
There are already 2 statements provided in internet-db2-connector, in inherit part for db2-connector. It is my mistake and you do not have to come up with additional statements there.