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 PostgreSQL Catalog

The PostgreSQL system catalog and system administration functions can aid both developers and administrators to keep the database clean and performant. System catalogs can be used to automate several tasks, such as finding tables without indexes, finding dependencies between database objects, and extracting information about the database using health checks, such as table bloats, and database size. Information extracted from the system catalog can be employed in monitoring solutions and in dynamic SQL. This chapter will discuss some tasks that a developer and administrator need to execute on a daily basis, for example, cleaning up database data and unused objects, building an index automatically, and monitoring database objects access.

The following topics will be covered in this chapter:

  • An overview of the system catalog
  • System catalog for administrators...