Question: 9
(Choose 1 answer)
Select the most correct answer
A. An index is not a data structure used to speed access to tuples of a relation, given values of one or more
attributes.
B. The key to index cannot be any attribute or set of attributes, and need not be the key to the relation.
C. We can think of the index as a binary search tree of (key, locations) pairs in which a key a is not
associated with a set of locations of the tulips.
D. An index is a data structure used to speed access to tuples of a relation, given values of one or more
attributes.
