Big Data and Machine Learning (Google case)

The database is like a library building ... every book (information) that enters must be properly placed (processed systematically), when a number of books come then the officer should be recorded like a book code, ISBN, publisher, author, book title, and others. If a bookcase is full then it must increase the amount, if one floor is full of bookcases then it should increase the number of floors, if one building is full of bookcases then it should increase the number of buildings. In this case, Google is the admin that will direct you to the right bookcase based on your search, because there are so many bookcases, and many floors, with different buildings. When you have the flu (cold sickness) and you are looking for a book on how to treat it, google will direct you to a bookcase about health, or modern and traditional medicine. Of course, because of your limitations, you may not check the books one by one (for example in a health bookcase there has 5000 books).