Video- sharing sites allow videos to be uploaded in which file format? the correct answer is .avi

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)?

Open this link after reading about ana's situation. complete each sentence using the drop-downs. ana would need a minimum of ato work as a translator. according to job outlook information, the number of jobs for translators willin the future.

What are "open-loop" and "closed-loop" systems