Suppose we have a B-Tree that holds keys and leaves. There are 300 million data records (N), and they are stored in the leaves (lowest level) of the B-Tree. Each leaf contains 100 data records. The leaves are stored only at the bottom level of the tree (below the keys), and each key at the bottom level of keys points to one leaf. The B-Tree has 4 levels of keys counting the root level which has m keys. Except for the bottom level, each key has m child keys. The bottom level keys have leaves (one leaf per key). Requried:
a. How many leaves are required to hold all the data records?
b. How many keys are required at the lowest key level of the B-Tree?
c. What is the branching factor (M) of the B-Tree. Show your work.

Type the correct answer in the box. spell all words correctly. which view of report creation allows you to customize the report before the database program creates it? creating a report in allows you to customize the report before the database program creates it. pl asap

Of the following pieces of information in a document, for which would you most likely insert a mail merge field?

Write a program that keeps asking the user for new values to be added to a list until the user enters 'exit' ('exit' should not be added to the list). these values entered by the user are added to a list we call 'initial_list'. then write a function that takes this initial_list as input and returns another list with 3 copies of every value in the initial_list. finally, inside print out all of the values in the new list. for example: input: enter value to be added to list: a enter value to be added to list: b enter value to be added to list: c enter value to be added to list: exit output: a b c a b c a b c note how 'exit' is not added to the list. also, your program needs to be able to handle any variation of 'exit' such as 'exit', 'exit' etc. and treat them all as 'exit'.