Consider the example School database shown in class with the Student, Teacher, Class, Contact Info, and Student Class tables. You need to revise the database because a class can have multiple sections with different teachers 4. [15 points] Use ERDPlus to draw an entity-relationship (ER) diagram for your revised database. Include attributes and cardinalities. a. b. [15 points] Use ERDPlus to draw the relational schema as mapped from your ER diagram. Your revised tables must be in second normal form (2NF) [10 points] Write the SQL for the query, "Who teaches Java programming and in which sections?" c