Question

Given relations Enrolled(Student, Course) and AllCourses(Course), which relational algebra operation correctly finds students enrolled in ALL courses listed in AllCourses?

A π_Student(σ_Course∈AllCourses(Enrolled)) (selection and projection only)
B Enrolled − AllCourses (set difference)
C Enrolled ÷ AllCourses (relational division)
D Enrolled ∪ AllCourses (union)
E Enrolled ⋈ AllCourses (natural join)
Practice Next

Hey! Ask a query

🎓
Think You're Ready for RBI Grade B?
RBI Grade B 2026 Phase 1 Memory Based Paper
  • 200 Questions with Detailed Solutions
  • Section-wise Coverage (GA, English, Quant & Reasoning)