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.
Consider an Entity-Relationship $(\text{ER})$ model in which entity sets $E_{1}$ and $E_{2}$ are connected by an $m:n$ relationship $R_{12}$. $E_{1}$ and $E_{3}$ are connected by…
Answer: 4
This static SEO snapshot loads the full interactive GateQA app when JavaScript is available.