Functional dependencies $(20$ points$)$

This task also relates to the university schema. Given the following relational schema:

AssistantBossDiplomastudents : PersNr, Name, AreaofExpertise, BossPersNr, BossName, MatrNr, SName, Semester, SResidence$]\}$

MatrNr, SName, Semester, SResidence are the data of the students supervised by the assistants. BossPersNr and BossName are the data of the professors who employ the assistants.

Proceed step by step:

$($a$)$ Determine the applicable functional dependencies $(5$ points$)$ Briefly describe each step of your procedure so that the methodology can be recognized.

$($b$)$ Determine the candidate keys $(5$ points$)$

Briefly describe each step of your procedure so that the methodology can be recognized.

$($c$)$ Determine the canonical coverage of the functional dependencies $(10$ points$)$

Briefly describe each step of your procedure so that the methodology can be recognized.