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.
Let $r_i(z)$ and $w_i(z)$ denote read and write operations respectively on a data item $z$ by a transaction $T_i$. Consider the following two schedules. $S_1: r_1(x)r_1(y)r_2(x)r_…
Answer: B
This static SEO snapshot loads the full interactive GateQA app when JavaScript is available.