Permanent storage that does not lose contents when a computer loses power is known as what type of storage?

Answer the following statements true (T) or false (F)

1) The primary purpose of a set is to determine if a particular element is a member of the set. 2) Set is not the only collection type that supports testing for membership. 3) Sets and maps can be implemented using either binary trees or by using a hashing function. 4) A hashing function is a function that maps elements of a set or a map to other elements that are in the set or the map. 5) When implementing a map class or a set class using a tree data structure, a heap is used for the tree.

Explain what distributed databases allow.

Fill in the blank(s) with the appropriate word(s).