GateQA is a free GATE CS preparation platform featuring 3,500+ previous-year questions (1987–2026),
36,000+ aptitude questions, subject-wise and year-wise mock tests, performance analytics,
and full offline support. Practice Operating Systems, Algorithms, DBMS, Computer Networks,
Theory of Computation, Discrete Mathematics, Compiler Design, Digital Logic, and more.
Which of the following query transformations (i.e., replacing the l.h.s. expression by the r.h.s expression) is incorrect? R1 and R2 are relations, C1 and C2 are selection conditi…
Answer: D
This static SEO snapshot loads the full interactive GateQA app when JavaScript is available.