Suppose we want to create an E-R diagram to represent the following information: Students take exams held on certain dates (day, month, year). Each exam has a name, total points for that exam, and the points that a student received. Each exam is associated with a course, and a course has an ID and a title. 1. What are the entity sets for the above information? For each entity set, state its name, attributes, and the primary key. 2. What are the relationship sets for the above information. For each relationship, state the entities that participate in the relationship and its degree. Also state the attributes for each relationship, if any. 3. Suppose a student can take each exam multiple times on different dates, and the data about each attempt -- date when the exam was taken, and the points earned by the student, must also be stored. How will the entity and relationship sets change to support this requirement