Which option identifies the best option to help the students in the following scenario? A college professor teaching an introductory computer programming course is looking for a language to help students learn the programming process.

A) Clipper
B) Lucid
C) Monk
D) Scratch

What is the foundation for proper monitoring, load balancing and routing in distributed systems

Octothorpe is another name for what common computer keyboard symbol?

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)?