This pull request makes a targeted update to how PostgreSQL database types are specified in the courseware/fields.py file. Specifically, it changes the type returned for PostgreSQL from BIGSERIAL to BIGINT in both the db_type and rel_db_type methods. This ensures that auto-incrementing behavior is not implicitly assumed and aligns with scenarios where a plain integer type is needed.
LMS (Learning Management System) -------------------------------- This directory contains code relating to the student portal for edX.