Author: Douglas W. Hubbard Subtitle: The Big Data Era — the quantitative decision-making method used by Fortune 500 companies Publisher: World Publishing Corporation Translator: Deng Hongtao Publication Year: 2013-09-01 ISBN: 9787510067327 Notes: Measurement is used to reduce uncertainty, not to eliminate it. The key to measurement is figuring out what to measure, and why the thing being measured matters.

1. How Society Runs on Credit First, let’s do a Q&A: @ask:Why can you ride the bus with just a card? @answer:Because I topped it up. @ask:Money? Then where did your money come from? @answer:My monthly salary. @ask:Why does the company pay you a salary every month? @answer:We signed a contract.

1. Background In the course of Web development, migrating data between multiple environments (local, testing, and production) comes up often. This article mainly discusses the possible data migration paths involved in Django development, and seeks feasible methods for them. 2. Scenarios There are four data migration targets in total: the