$2-$ We have created a table to store the information related to grading papers written by

students. Throughout the semester, students write multiple papers. Each paper is graded

by an evaluator. Given the attributes and sample values in the following table:

a$)$ Identify all indicated dependencies and identify the dependency type.

b$)$ Normalize the database to at $2NF$ level. Show the dependency diagram for each table in

$2$NF$.$

c$)$ Normalize the database to $3NF$ level. Show the dependency diagram for each table in

$3NF.$