Enhanced Entity-Relationship Modeling Exercise 2: Consider the following entities: Professor (ssn, name, address, salary, position, assistantRank, associate Rank) Student (ssn, name, address, major, programType, underGraduate Major, graduate Major) Create an EER model for the following descriptions: Values of the position attribute can be either "Assistant" or "Associate". Values of the programType attribute can be either "Graduate" or "Under Graduate". Assistant professors can teach only undergraduate students. Associate professors can teach both graduate and under graduate students.