Book Image

Learn PostgreSQL

By : Luca Ferrari, Enrico Pirozzi
Book Image

Learn PostgreSQL

By: Luca Ferrari, Enrico Pirozzi

Overview of this book

PostgreSQL is one of the fastest-growing open source object-relational database management systems (DBMS) in the world. As well as being easy to use, it’s scalable and highly efficient. In this book, you’ll explore PostgreSQL 12 and 13 and learn how to build database solutions using it. Complete with hands-on tutorials, this guide will teach you how to achieve the right database design required for a reliable environment. You'll learn how to install and configure a PostgreSQL server and even manage users and connections. The book then progresses to key concepts of relational databases, before taking you through the Data Definition Language (DDL) and commonly used DDL commands. To build on your skills, you’ll understand how to interact with the live cluster, create database objects, and use tools to connect to the live cluster. You’ll then get to grips with creating tables, building indexes, and designing your database schema. Later, you'll explore the Data Manipulation Language (DML) and server-side programming capabilities of PostgreSQL using PL/pgSQL, before learning how to monitor, test, and troubleshoot your database application to ensure high-performance and reliability. By the end of this book, you'll be well-versed with the Postgres database and be able to set up your own PostgreSQL instance and use it to build robust solutions.
Table of Contents (27 chapters)
Section 1: Getting Started
Section 2: Interacting with the Database
Section 3: Administering the Cluster
Section 4: Replication
Section 5: The PostegreSQL Ecosystem
Useful Tools and Extensions

This chapter is to be considered as an appendix to the book. In this chapter, we will talk about some tools and extensions that allow a DBA to maximize the efficiency of their work by minimizing the effort needed to complete it.

We will talk about these extensions:

  • pg_trgm
  • Foreign data wrappers and the postgres_fdw extension
  • btree_gin

These are some of the official extensions for PostgreSQL. A site that can be very useful for finding extensions available for PostgreSQL is

In addition to extensions, we will also talk about useful tools for the PostgreSQL DBA. There are dozens of tools available for PostgreSQL, but in this chapter, we will talk about pgbackrest, a powerful tool useful to manage disaster recovery and point-in-time recovery (PITR).

The first one is very useful for managing continuous backup and the second one is an...