takes student ID ID course id deplome or cred ester wer grade section Courseld seld semester course course Id advisor depr name credits department dent name building budget building FOON Number time wid time_slot Time slord day art time end_time prerea cursed classroom building room number capacity instructor ID name de um salary teaches ID Curved ser Id Senester war Figure 2.9 Schema diagram for the university database. Using the university data base write the following queries using SQL 1. Find the name of all students in Physics' department 2. Find the name of all students with total credit greater than 20 3. Find the name of all students who takes courses in Fall semester, year 2018 4. Find the name of all instructor who taught in Fall semester , year 2018