What makes BTree a good choice for an index (choose best statement)

Assuming the definition of 3NF based on primary key, a relation schema R is in Third Normal Form (3NF) if it is in 2NF and no non-prime attribute in R is transitively dependent on any attribute of the the primary key

Given R(A, B, C) with state: A B C a f m a g m b h m b i n c j n c k n The functional dependency C → B holds for the database state shown. (true or false)

What is the role of the diagnostic-related group in the healthcare system of the U.S.?

What is the best choice for an index for the following query: select name, birthday from employee where birthday > ‘1992-01-10’;

What is the best choice for an index for the following query: select name, fav_color from employee where fav_color=’blue’;

Global warming is caused by an increase in which of the following?

Name the following parts. and

Which of the following is not one of the four basic characteristics of chordates? 

Regulation of genes can happen during?