Neara in the wort and soon an essay carried out a neutral examination of the two most important aspects of NoSQL databases, which make it difficult to self-study. NoSQL solutions remind the user of the often overlooked, sometimes long forgotten options for data storage and search (data model). At the same time, some systems are aiming for their data in clusters store (Distributed Databases), which every user of relational databases is not common. The current categorization of NoSQL solutions in Key-Value, Document-Based, Column-oriented and graph-based following are discussed on pages 150 data model and approach to distribution.
The data models are introduced, based on the example and occasionally compare with the well-known relational data model. From the discussion suitable and less suitable applications of the relevant class of solutions are derived.
The subject area Distributed Databases / Clustering is organized, filed against the background of a lot designated especially in NoSQL environment CAP Theorem and explains in master-slave (primary copy) and peer-to-peer (update anywhere). In addition, the suitability of sharding is in conjunction with "aggregate oriented" presented data models.
By focusing on the (theoretical) properties naturally results in a categorization that light into the jungle of over 150 NoSQL solutions (as of 2012) brings. Completed the book is an attempt with the classification of NoSQL solutions in current software architectures.
Experts who have already an overview can, their own model with the Syndicate and complement the authors. Given the price, the readability and brevity, the book is suitable for them. More than one classification, however, does not offer the book and wants to offer either.
Beginners will not find any installation instructions or page-long program texts with commentary - they were out of place in this book.
The NoSQL movement should the authors thank. Finally there is a neutral, intelligible discussion of important ideas of the movement, which is limited to 150 pages.
