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VOOZH | about |
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VOOZH | about |
Suppose (
, B) and (
,D) are two relation schemas. Let r1 and r2 be the corresponding relation instances. B is a foreign key that refers to C in r2. If data in r1 and r2 satisfy referential integrity constraints, which of the following is ALWAYS TRUE?
👁 DBMSGATE2012
A
B
C
D
This question is part of this quiz :
GATE CS 2012,ER and Relational Models,DBMS GATE CS PYQ QUIZ,Relational Algebra GATE CS PYQ Quiz
