Question 254 A magnetic tape drive has transport speed of 200 inches per second and a recording density of 1600 bytes per inch. The time required […]

Question 248 Read the following and Answer the questions: Consider the relational schema of sailors S, Reserves R and Boats B. Which of the following relational […]

Question 32 A B-tree used as an index for a large database table has four levels including the root node.If a new key is inserted in […]