Book Image

Learning PostgreSQL 11 - Third Edition

By : Salahaldin Juba, Andrey Volkov
Book Image

Learning PostgreSQL 11 - Third Edition

By: Salahaldin Juba, Andrey Volkov

Overview of this book

PostgreSQL is one of the most popular open source database management systems in the world, and it supports advanced features included in SQL standards. This book will familiarize you with the latest features in PostgreSQL 11, and get you up and running with building efficient PostgreSQL database solutions from scratch. Learning PostgreSQL, 11 begins by covering the concepts of relational databases and their core principles. You’ll explore the Data Definition Language (DDL) and commonly used DDL commands supported by ANSI SQL. You’ll also learn how to create tables, define integrity constraints, build indexes, and set up views and other schema objects. As you advance, you’ll come to understand Data Manipulation Language (DML) and server-side programming capabilities using PL/pgSQL, giving you a robust background to develop, tune, test, and troubleshoot your database application. The book will guide you in exploring NoSQL capabilities and connecting to your database to manipulate data objects. You’ll get to grips with using data warehousing in analytical solutions and reports, and scaling the database for high availability and performance. By the end of this book, you’ll have gained a thorough understanding of PostgreSQL 11 and developed the necessary skills to build efficient database solutions.
Table of Contents (18 chapters)

The JSON data structure

JSON is a universal data structure that's human- and machine-readable. JSON is supported by almost all modern programming languages, embraced as a data interchange format, and heavily used in RESTful web services.

In this section, we'll compare JSON and XML, compare JSON and JSONB PostgreSQL data types, and explore JSON data format functions.

JSON and XML

XML and JSON are both used to define the data structure of exchanged documents. JSON grammar is simpler than that of XML, and JSON documents are more compact. JSON is easier to read and write. On the other hand, XML can have a defined data structure enforced by the XML Schema Definition (XSD) schema, and it also has namespace support, comments...