Book Image

Learning PostgreSQL 10 - Second Edition

Book Image

Learning PostgreSQL 10 - Second Edition

Overview of this book

PostgreSQL is one of the most popular open source databases in the world, supporting the most advanced features included in SQL standards. This book will familiarize you with the latest features released in PostgreSQL 10. We’ll start with a thorough introduction to PostgreSQL and the new features introduced in PostgreSQL 10. We’ll cover the Data Definition Language (DDL) with an emphasis on PostgreSQL, and the common DDL commands supported by ANSI SQL. You’ll learn to create tables, define integrity constraints, build indexes, and set up views and other schema objects. Moving on, we’ll cover the concepts of Data Manipulation Language (DML) and PostgreSQL server-side programming capabilities using PL/pgSQL. We’ll also explore the NoSQL capabilities of PostgreSQL and connect to your PostgreSQL database to manipulate data objects. By the end of this book, you’ll have a thorough understanding of the basics of PostgreSQL 10 and will have the necessary skills to build efficient database solutions.
Table of Contents (23 chapters)
Title Page
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface

PostgreSQL capabilities


PostgreSQL provides enterprise-level services that guarantee the continuation of the business. For example, PostgreSQL supports replication, this enables the developers to provide high availability (HA) solutions. PostgreSQL can integrate data form different data sources , this makes it easy for developer to use it for extract , transform, and load (ETL) jobs .In addition to that PostgreSQL security is treated as a first class citizen and not as a good to have feature, security updates are shipped in minor releases. Finally, the features of PostgreSQL is uncountable, PostgreSQL provides advanced SQL statements, very rich extensions, and interactive tools. 

Replication

Replication allows data from one database server to be replicated to another server. Replication is used mainly to achieve the following:

  • High availability: A second server can take over if the primary server fails
  • Load balancing: Several servers can serve the same requests
  • Faster execution: A query is executed...