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
Backup and Restore

It doesn't matter how solid your hardware and software is sooner or later, you will need to go back in time to recover accidentally deleted or damaged data. That is the aim of backups a safe copy that you can keep for a specific amount of time that allows you to recover from data loss. Being an enterprise-level database cluster, PostgreSQL provides a set of specific tools that allow a database administrator to take care of backups and restorations, and this chapter will show you all the main tools that you can exploit to be sure your data will last any accidental abuse.

Backup and restore isn't a very complex topic, but it's fundamental in any production system and requires careful planning. In fact, with a backup copy, you are holding another exact copy of your database just in case something nasty happens; this extra copy will...