PostgreSQL is an open source multi-purpose relational database system which is widely used throughout the world. It is one huge system with the integrated subsystems, each of which has a particular complex feature and works with each other cooperatively. Although understanding of the internal mechanism is crucial for both administration and integration using PostgreSQL, its hugeness and complexity prevent it. The main purposes of this document are to explain how each subsystem works, and to provide the whole picture of PostgreSQL.

This document is based on the second part of the book I wrote in Japanese in 2012 (ISBN-13: 978-4774153926) which is composed of seven parts, and covers version 13 and earlier.

The Chinese version of this document has been published in June 2019.

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Hironobu SUZUKI

I graduated from graduate school of information engineering (M.S. in Information Engineering), have worked for several companies as a software developer and technical manager/director. I published seven books in the fields of database and system integration (4 PostgreSQL books and 3 MySQL books). In June 2019, the Chinese book of this document has been published.

As a director of the Japan PostgreSQL Users Group (2010-2016), I organized the largest (non-commercial) technical seminar/lecture of PostgreSQL in Japan for more than six years, and also served as the program committee chair of the Japan PostgreSQL Conference in 2013 and as a member in 2008 and 2009.

In 2021, I released pg_plan_inspector that is a framework to monitor and improve the performance of PostgreSQL using Machine Learning methods.

Cuando era joven, vivió en Sudamérica por unos años. Recientemente, a veces vuelve a allí.

Now I live in Zürich.
I am considering looking for a new job in Swiss or the EU.
I love Swiss and like the company I work for, however, I would like to do new challenges, e.g. applying ML and AI technologies to DBMS. I am waiting for contacts from people who want to do new things.



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