Book Image

PostgreSQL Development Essentials

By : Manpreet Kaur, Baji Shaik
Book Image

PostgreSQL Development Essentials

By: Manpreet Kaur, 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

Basic design rules


There are some basic design rules which help us to build a good database. Let us discuss on those:

The ability to solve the problem

The main reason for designing a database is to solve a problem. So, it's very important to understand the problem and build the database so that it can fulfill the business requirements. No matter how well a database is designed, it is worthless if it doesn't solve the reporting requirements.

The ability to hold the required data

The main reason for having a database is to store data. While thinking about this concept, you should first consider what is required in order to fulfill the needed queries, the must have fields and after that, you can go ahead and extend the design so that it can fulfill any future requirements.

The ability to support relationships

Relationships are equally as important as defining the entities. A database should support relationships among the entities. If you don't focus on the relationships, your database design will...