Question: Teacher = [ CourseN, Quarter , TeacherName] Course = [ CourseN , CourseName, Nunit) is LocationNTime = [ CourseN, Quarter, DayTime, RoomN]/ Examples of DayTime:

Teacher = [CourseN, Quarter, TeacherName]

Course = [CourseN, CourseName, Nunit) is

LocationNTime = [CourseN, Quarter, DayTime, RoomN]/ Examples of DayTime: M2:00AM,

W4:50PM, and T8:00PM. Note that DayTime is represented as a string.

Student = [studentName, CourseN, Quarter]

Express the following queries by SQL statements

List the name of every teacher who has taught the same course at least two times.

List the name of every teacher(distinct names) who has taught at least two different courses in the same or different quarters.

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