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

Installing PostgreSQL 12 or higher

PostgreSQL can run on several Unix and Unix-like operating systems, such as Linux, as well as on Microsoft Windows. So far, the most supported platform remains Linux because most PostgreSQL developers work on this platform, and so it is the one with the most tested use cases. However, deploying on other platforms should not present any problems and, most importantly, is not going to put your data at any risk.

This section will focus on installing PostgreSQL 12, since it is the latest stable version available worldwide. You will learn, however, how to build your own version of PostgreSQL, and this may also be the way to install PostgreSQL 13 on your system.

Before installing PostgreSQL 12, you need to choose, or at least evaluate, how to install it. There are two main ways to get PostgreSQL 12 up and running, as follows:

  • Compiling from sources
  • Using a binary package

Binary packages are provided by the PostgreSQL community or the operating system, and...