Question 458 Which of the following statements is TRUE? D1 : The decomposition of the schema R(A, B, C) into R1(A, B) and R2 (A, C) […]

Question 459 In distributed databases, location transparency allows for database users, programmers and administrators to treat the data as if it is at one location. A […]

Question 462 Consider the relations R(A, B) and S(B, C) and the following four relational algebra queries over R and S: I. ΠA, B (R ⨝ […]

Question 463 Which of the following statements concerning Object-Oriented databases is FALSE? A Objects in an object-oriented database contain not only data but also methods for […]