Learn PostgreSQL

Build and manage high-performance database solutions using PostgreSQL 12 and 13

Luca Ferrari , Enrico Pirozzi 지음

Packt(GCO Science) 2020년 10월 09일 출간

작품소개

책소개

A comprehensive guide to building, managing, and securing scalable and reliable database and data warehousing applications using Postgres 12 and 13

▶What You Will Learn
？Understand how users and connections are managed by running a PostgreSQL instance
？Interact with transaction boundaries using server-side programming
？Identify bottlenecks to maintain your database efficiently
？Create and manage extensions to add new functionalities to your cluster
？Choose the best index type for each situation
？Use online tools to set up a memory configuration that will suit most databases
？Explore how Postgres can be used in multi-instance environments to provide high-availability, redundancy, and scalability

▶Key Features
？Set up your database cluster and monitor, secure, and fine-tune it for optimal performance
？Learn the fundamentals of database management and implement client- and server-side programming using SQL and PL/pgSQL
？Explore useful tips to develop efficient PostgreSQL database solutions from scratch

▶Who This Book Is For
This Postgres book is for anyone interested in learning about the PostgreSQL database from scratch. Anyone looking to build robust data warehousing applications and scale the database for high-availability and performance using the latest features of PostgreSQL will also find this book useful. Although prior knowledge of PostgreSQL is not required, familiarity with databases is expected.

목차

▶TABLE of CONTENTS
▷ Section 1: Getting Started
？Chapter 1: Introduction to PostgreSQL
？Chapter 2: Getting to Know Your Cluster
？Chapter 3: Managing Users and Connections

▷ Section 2: Interacting with the Database
？Chapter 4: Basic Statements
？Chapter 5: Advanced Statements
？Chapter 6: Window Functions
？Chapter 7: Server-Side Programming
？Chapter 8: Triggers and Rules
？Chapter 9: Partitioning

▷ Section 3: Administering the Cluster
？Chapter 10: Users, Roles, and Database Security
？Chapter 11: Transactions, MVCC, WALs, and Checkpoints
？Chapter 12: Extending the Database - the Extension Ecosystem
？Chapter 13: Indexes and Performance Optimization
？Chapter 14: Logging and Auditing
？Chapter 15: Backup and Restore
？Chapter 16: Configuration and Monitoring

▷ Section 4: Replication
？Chapter 17: Physical Replication
？Chapter 18: Logical Replication

▷ Section 5: The PostegreSQL Ecosystem
？Chapter 19: Useful Tools and Extensions
？Chapter 20: Toward PostgreSQL 13

책 속으로

▶What this book covers
？ Chapter 1, Introduction to PostgreSQL, explains what the PostgreSQL database is, the community and development behind this great and robust relational database, as well as how to get help and recognize different PostgreSQL versions and dependencies. You will also learn how to get and install PostgreSQL through either binary packages or by compiling it from sources. A glance at how to manage the cluster with your operating system tools (systemd and rc scripts) will be taken.

？ Chapter 2, Getting to Know Your Cluster, shows you the anatomy of a PostgreSQL cluster by specifying what is on the file system, where the main configuration files are, and how they are used. The psql command-line utility will be described in order to make you connect to the database cluster and check it's working.

？ Chapter 3, Managing Users and Connections, provides a complete description of how users and connections are managed by a running instance and how you can prevent or limit user connections. The architecture and terminology of the database will be detailed. The concept of "role" will be described, and you will learn how to create single-user accounts, as well as groups.

？ Chapter 4, Basic Statements, shows how to create and destroy main database objects, such as databases, tables, and schemas. The chapter also takes a glance at basic statements, such as SELECT, INSERT, UPDATE, and DELETE.

？ Chapter 5, Advanced Statements, introduces the advanced statements PostgreSQL provides, such as common table expressions, UPSERTs, and queries with RETURNING rows. This chapter will provide practical examples of when and how to use them.

？ Chapter 6, Window Functions, introduces a powerful set of functions that provide aggregation without having to collapse the result in a single row. In other words, thanks to window functions, you can perform aggregation on multiple rows (windows) and still present all the tuples in the output. Window functions allow the implementation of business intelligence and make reporting easy.

？ Chapter 7, Server-Side Programming, tackles the fact that while SQL is fine for doing most of the day-to-day work with a database, you could end up with a particular problem that requires an imperative approach. This chapter shows you how to implement your own code within the database, how to write functions and procedures in different languages, and how to make them interact with transaction boundaries.

？ Chapter 8, Triggers and Rules, presents both triggers and rules with practical examples, showing advantages and drawbacks.

？ Chapter 9, Partitioning, explores partitioning ？ the capability to split a table into smaller pieces. PostgreSQL has supported partitioning for a long time, but with version 10 it introduced so-called "declarative partitioning." After having a quick lock at old-school inheritance-based partitioning, the chapter focuses on all the features related to declarative partitioning and its tuning parameters.

？ Chapter 10, Users, Roles, and Database Security, first glances at user management: roles, groups, and passwords. You will learn how to constrain users to access only particular databases and from particular machines, as well as how to constrain the usage of database objects such as tables. You then will see how row-level security can harden your table contents and prevent users from modifying tuples that do not belong to them.

？ Chapter 11, Transactions, MVCC, WALs, and Checkpoints, presents a very fundamental concept in PostgreSQL: the Write-Ahead Log. You will learn why such a log is so important, how it deals with transactions, and how you can interact with transactions from a SQL point of view. The chapter also presents you with the concept of transaction isolation, ACID rules, and how the database can implement them. Then you will discover how the WAL can speed up database work and...

출판사 서평

▶ Preface
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.

작가정보

저자(글) Luca Ferrari

Luca Ferrari has been passionate about computer science since the Commodore 64 era, and today holds a master's degree (with honors) and a Ph.D. from the University of Modena and Reggio Emilia. He has written several research papers, technical articles, and book chapters. In 2011, he was named an Adjunct Professor by Nipissing University. An avid Unix user, he is a strong advocate of open source, and in his free time, he collaborates with a few projects. He met PostgreSQL back in release 7.3; he was a founder and former president of the Italian PostgreSQL Community (ITPUG). He also talks regularly at technical conferences and events and delivers professional training.

저자(글) Enrico Pirozzi

Enrico Pirozzi has been passionate about computer science since he was a 13-year-old, his first computer was a Commodore 64, and today he holds a master's degree from the University of Bologna. He has participated as a speaker at national and international conferences on PostgreSQL. He met PostgreSQL back in release 7.2, he was a co-founder of the first PostgreSQL Italian mailing list and the first Italian PostgreSQL website, and he talks regularly at technical conferences and events and delivers professional training. Right now, he is employed as a PostgreSQL database administrator at Nexteam (Zucchetti Group S.p.a.).