Please help me with this; Use ER Notation or Crow's foot notation to solve following questions

Preferably the Crow's foot notation.

Design a database suitable for a university registrar. This

database should include information about students, departments, professors,

courses, which students are enrolled in which courses, which professors are

teaching which courses, student grades, TAs for a course (TAs are students),

which courses a department offers, and any other information you deem appropriate.

Note that this question is more free-form than the questions above, and

you need to make some decisions about multiplicities of relationships, appropriate

types, and even what information needs to be represented.