PERGUNTA 1 Um pesquisador deve escolher o seu método de pesquisa:
a. Pelas facilidades em realizar a pesquisa.
b. Pelas experiências de outros pesquisadores.
c. Pelas especificidades do objeto de pesquisa.
d. Pelas regras dos manuais de pesquisa.
e. Por aquilo que for determinado pela instituição a qual está vinculado.

Larry sent an email to andy. andy didn't open larry's email but still understood what the message was. how did andy determine the message without opening the email?

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)?

How does is make you feel when you're kind to others? what are some opportunities in your life to be more kind to your friends and loved ones? imagine a world where kindness has be outlawed. how would people act differently? would your day-to-day life change significantly? why or why not?