Task $20,5$Marks$)$ Draw ER diagram for the given case study student in a university takes one or more courses according to the choice. However, in order to be a student, he must take at least one course. The course may have one attributes like Course$-$D$.$ Course$-$Name and Course Fee etc. Drow ER diagram to show the relationship between Student" and "Course Task$-3(0.$SMarks$)$: Draw ER diagram for the given case study A course is always thought by some course teacher. A teacher cannot exist without corresponding course. A course may be thought by at least one or more teacher on the other hand, a teacher may teach at least one or more course Task $4(0\mathrm{.}5$Marks$)$: Draw ER diagram for the given case study Each department has a HOD$/$chairman while chairman chairs only one department Show the relationship. Chairman is a weekentity because its existence is dependent on corresponding