Not the kind of short cut book that it may lead you to think. The book is a brief introduction to modern database types and what are their characteristics, what are their use case, and why you should choose it over other database types.
Seven Languages in Seven Weeks: A Pragmatic Guide to Learning Programming Languages (Pragmatic Programmers)
Similar book as above, but introduces you to 7 different programming languages. The focus of the book is not on how to use each language, but to explore the different programming paradigms introduced by each programming language. (prototypical inheritance, functional programming, logic programming, object-oriented programming)