A scheduler needs to determine an order in which a set of processes will be assigned to processor. Theith process requirestiunits of time and has weightwi. For a given schedule, definethe finish time of processito be the time at which processiis completed by the processor. (Assumethat the processor starts processing the tasks at time 0.)

Which database model is best used for data warehouse and data mining

What is a distinguishing feature of today’s graphic application software?) graphic applications are used today on a variety of devices, including touch-screen kiosks and mobile phones.

Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?