@lamagnifica that is what the code is doing:
```
class UserCourseTag(models.Model):
    user = models.ForeignKey(User, db_index=True, related_name="+")
    key = models.CharField(max_length=255, db_index=True)
    course_id = models.CharField(max_length=255, db_index=True)
    value = models.TextField()

```