Computer Science · Database Management Systems
Consider the relational schemas: R1{Roll_no, Name, Grades} and R2{Roll_no, Subject_ID, Grades}. Which of the following operations cannot be performed directly on these two relations?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Union✓
- 2Select
- 3Join
- 4Project
Correct answer
Union
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