V. potential errors: in this section, you will discuss common network errors and how your recommendations will minimize and address these issues. a. based on your previous recommendations, describe common network errors that the new location may encounter. b. describe effective troubleshooting approaches to the errors you identified. c. explain how the approaches you described would ensure rapid resolution of the errors. be sure your response is specific to the business location.

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)?