Type of some database fields

I believe it is a mistake to have the fields quiz_question_answer.points and quiz_result.score set to TINYINT.

I am currently putting together some question types that require fractional scores. For example, consider the case of a problem with multiple correct answers where we want to give a fraction of a point if the quiz-taker picks some, but not all of the right answers. (Implementing this with whole points adds unnecessary complexity to weighting the scores when we mix various question types.)

Fractional result scores will also allow implementing a guessing penalty (as used, for example, on the SAT), where a fraction of a point is subtracted for incorrect answers.

So I suggest changing these fields to DECIMAL, or perhaps FLOAT.