A file of employee have 10,000 blocks on a cylinder of a disk with characteristics r=8ms and btt=0.6ms I want to know the cost of read inthe file under following conditions for a query say to read highest salary ..1.using single buffer and a memory buffer of 10pg 2. Using double buffer and a memory buffer of 10 pgs
3. Usiing single buffer and a memory buffer of 50 pgs
4. Using double buffer and a memory of 50 pgs