This book is not about big data. It is about design with RDBMS. Hibernate is just a technology. That can be replaced with iBatis, Toplink or simple JDBC.
If you are thinking big data is for solving all kinds of problems and is meant for all applications you may be wrong. RDBMS is still the predominant database used for enterprise applications. I cannot think of some enterprise applications which does not have referential integrity constraints, transactions, etc.
Also I do not think anyone will learn only NoSQL without knowing RDBMS. RDBMS is still taught in colleges as a course however NoSQL is not.