EXPLAINING A URL URLs specify the location for resources on the Internet.
Examine the following URL and answer the following questions. In the following URL: www. example. com/homepage. html
What is the domain in this URL?
What is the path in this URL?
When this URL is typed into your browser, your browser generates a request based on the URL.
Where does this request get sent?
What kind of machine is listening for this request?
What exactly is the request asking for?
What does your browser expect to receive as a response?

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)?