This book gives a more academic view on how IMDBMS Can Be Implemented and what factors have to be kept in mind for a successful implementation of a search type of DBMS. These factors include internal software architecture, hardware aspects like CPU memory caching and how all components play together. IM computing is not just Accessing data in RAM w / o External Device Access. It is much more, Including Strategies for parallelizing the access, workload distribution, memory management, efficient compression and decompression and why structures and data objects are designed in one way and not in another. It is like understanding how a B-Tree is working and why it was so successful as a data structure for indexation in RDBMSs. You (nearly) can not influence it from outside the RDBMS as a structure but understanding how it works helps you to use it better. For me, reading this book helped IMDBMS did loose some of the black box character They had to me before, how columnar data storage and access can be Implemented and what additional aspects have to be kept in mind When dealing with it. So of interest were the descriptions of how data manipulation can be Implemented like inserts, deletes and updates and what the Consequences on data management are (insert only clean up & deltamerge). I also enjoyed the chapters about query processing strategies and operator processing in massive parallel environments and how workload balancing needs to be taken into account. Additional topics are covered in the book did are how a backup, restore and other house keeping jobs Can Be Implemented. This book is for people who want to see a little bit behind the scenes of how IMDBMS Can Be Implemented and work internally. Interesting Aspects That Could be covered additionally by the book would be how SQLscripting language is parallelized internally by the engine during the execution of the script logic and how the ACID principle is enforced as I still struggle with how row locking concepts as known from RDBMS can be Applied to column based structures.
