Teaching Haryana (HPSC) Assistant Professor Mock Test 2025 DBMS Integrity Constraints and Normal Form Functional Dependency
The following functional dependencies for relational schema R(PQRSTU) are given:
PQ → RS, ST → U, R → T, U → S, PT → R and T → P
Which of the following is true?1
{PT}+ = {PRST}
2
{ST}+ = {PQRSTU}
3
{QT}+ = {PQRSTU}
4
{PQ}+ = {PQRTU}
5
Question Not Attempted