- Transactions are at the core of any modern relational database. The idea is to be able to make operations atomic. In other words, you want everything or nothing. If you want to delete 1 million rows, for example, you want none or all of them to be gone—you don't want to be stuck with a couple of remaining rows.
- The most important thing is that the configuration of PostgreSQL doesn't really affect the maximum length of a transaction. Therefore, you can run basically (almost) infinitely long transactions changing billions of lines with hundreds of millions of statements.
- Not all transactions are created equally. Therefore, in many cases, you have to control the visibility of data inside your transactions. This is exactly when transaction isolation comes into play. Transaction isolation levels allow you to do exactly that.
- Yes, definitely. Table...
Mastering PostgreSQL 12
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Mastering PostgreSQL 12
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Overview of this book
Thanks to its reliability, robustness, and high performance, PostgreSQL has become the most advanced open source database on the market. This third edition of Mastering PostgreSQL helps you build dynamic database solutions for enterprise applications using the latest release of PostgreSQL, which enables database analysts to design both physical and technical aspects of system architecture with ease.
Starting with an introduction to the newly released features in PostgreSQL 12, this book will help you build efficient and fault-tolerant PostgreSQL applications. You’ll thoroughly examine the advanced features of PostgreSQL, including logical replication, database clusters, performance tuning, monitoring, and user management. You’ll also work with the PostgreSQL optimizer, configure PostgreSQL for high speed, and understand how to move from Oracle to PostgreSQL. As you progress through the chapters, you’ll cover transactions, locking, indexes, and how to optimize queries for improved performance. Additionally, you’ll learn how to manage network security and explore backups and replications while understanding useful PostgreSQL extensions to help you in optimizing the performance of large databases.
By the end of this PostgreSQL book, you’ll be able to get the most out of your database by implementing advanced administrative tasks effortlessly.
Table of Contents (18 chapters)
Preface
PostgreSQL 12 Overview
Understanding Transactions and Locking
Section 2: Advanced Concepts
Making Use of Indexes
Handling Advanced SQL
Log Files and System Statistics
Optimizing Queries for Good Performance
Writing Stored Procedures
Managing PostgreSQL Security
Handling Backup and Recovery
Making Sense of Backups and Replication
Deciding on Useful Extensions
Troubleshooting PostgreSQL
Migrating to PostgreSQL
Assessment
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