Draw an Entity relationship diagram (ER) for a university according to the following rules: 1- ­‐ For each student the university needs to keep track of: first name, last name, student id, address, phone no and their major.
2- ­‐ The student id is identical for each student.
3- ­‐ Each course has a number, name and credit. The course number is unique for each course.
4- ­‐ Each department has a name, code and location. The code is unique for each department.
5- ­‐ Each course may has one or more sections where each section is belong to only one course.
6- ­‐ A department offers one or many courses. 7-­‐ Some courses have perquisite courses.
8-­‐ Each student could register in one or more courses.

In your diagram you need to show the following: 1-­‐ The primary key for each entity.
2-­‐ The cardinality and participation between entities.