If a menu-driven program uses a loop to redisplay the menu after a selected operation has been performed, the menu should probably have an item that the user can select to

To produce a starlight effect in her photograph, lina should choose the filter for her camera.

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)?

Curriculum exam to process a resident's payment, you must click on onesite payments home page. from the a. reports b. my settings o c. transactions o d. rent tab