Book Image

PostgreSQL Development Essentials

By : Baji Shaik
Book Image

PostgreSQL Development Essentials

By: Baji Shaik

Overview of this book

PostgreSQL is the most advanced open source database in the world. It is easy to install, configure, and maintain by following the documentation; however, it’s difficult to develop applications using programming languages and design databases accordingly. This book is what you need to get the most out of PostgreSQL You will begin with advanced SQL topics such as views, materialized views, and cursors, and learn about performing data type conversions. You will then perform trigger operations and use trigger functions in PostgreSQL. Next we walk through data modeling, normalization concepts, and the effect of transactions and locking on the database. The next half of the book covers the types of indexes, constrains, and the concepts of table partitioning, as well as the different mechanisms and approaches available to write efficient queries or code. Later, we explore PostgreSQL Extensions and Large Object Support in PostgreSQL. Finally, you will perform database operations in PostgreSQL using PHP and Java. By the end of this book, you will have mastered all the aspects of PostgreSQL development. You will be able to build efficient enterprise-grade applications with PostgreSQL by making use of these concepts
Table of Contents (17 chapters)
PostgreSQL Development Essentials
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface

Summary


In this chapter, we looked at ways in which we can use the functionality of PostgreSQL using arrays, slicing arrays, and unnesting arrays of rows. An array provides great functionality when it comes to using data in multiple ways, or when we have a large chunk of data available with us. We also looked at the JSON datatype, which is useful to store multilevel, dynamically structured object graphs. Additionally, we discussed how to manage XML data and use its functions, which is supported by PostgreSQL. In the last section, we looked at ways to deal with composite types and altering types. Composite types are pretty important as once created they can be referred to by multiple tables, which helps in avoiding the same set of attributes again and again. Also, if we need to alter something in the set of those attributes, we will need to do it once and it will be automatically reflected in the dependent tables.