Consider the relational schema below: Students(sid: integer, sname: string, major: string) Courses(cid: integer, cname: string, hours: integer) Enrollment(sid: integer, cid: integer, grade: real) Write a relational algebra expression that satisfies this query? Find the distinct names of all students that take at least three courses and major in "Philosophy".

The correct answer to go in the blank would be a) complement.

Iposit c as the correct answerbeing a waitress and managing a restaurant can be different jobs in the same care  this is because the difference between the two is attitude. they can be both jobs or careers, if the attitude of the job-doer is that way. on e can be a manger yet sees it a s a job. the job of waitress can also have an impact on future job prospects thus is important for the career line.