Question 48 Consider a schema R(A,B,C,D) and functional dependencies A → B and C → D. Then the decomposition of R into R1(AB) and R2(CD) is A […]

Question 816 ___symbol is used to denote derived attribute in ER model A Dashed ellipse B Square ellipse C Ellipse with attribute name undIrected D Rectangular […]

Question 815 Maximum number of superkeys for the relation schema R(X,Y,Z,W) with X as the key is: A 6 B 8 C 9 D 12 Database-Management-SystemKeysNielit […]

Question 111 For relation R = (L, M, N , O, P), the following dependencies hold: M → O NO → P P → L and […]