Book Image

Developing Modern Database Applications with PostgreSQL

By : Dr. Quan Ha Le, Marcelo Diaz
Book Image

Developing Modern Database Applications with PostgreSQL

By: Dr. Quan Ha Le, Marcelo Diaz

Overview of this book

PostgreSQL is an open-source object-relational database management system (DBMS) that provides enterprise-level services, including high performance and scalability. This book is a collection of unique projects providing you with a wealth of information relating to administering, monitoring, and testing PostgreSQL. The focus of each project is on both the development and the administrative aspects of PostgreSQL. Starting by exploring development aspects such as database design and its implementation, you’ll then cover PostgreSQL administration by understanding PostgreSQL architecture, PostgreSQL performance, and high-availability clusters. Various PostgreSQL projects are explained through current technologies such as DevOps and cloud platforms using programming languages like Python and Node.js. Later, you’ll get to grips with the well-known database API tool, PostgREST, before learning how to use popular PostgreSQL database testing frameworks. The book is also packed with essential tips and tricks and common patterns for working seamlessly in a production environment. All the chapters will be explained with the help of a real-world case study on a small banking application for managing ATM locations in a city. By the end of this DBMS book, you’ll be proficient in building reliable database solutions as per your organization's needs.
Table of Contents (17 chapters)
1
Section 1 - Introducing PostgreSQL Development and Administration
3
Section 2 - Development in PostgreSQL
9
Section 3 - Administration in PostgreSQL

Setting up simple pgunit for PostgreSQL RDS

  1. The plpgsql code depends on the dblink extension being present in the database you run the tests on. We set up a simple pgunit in a dedicated schema such as pgunit and run these two lines of SQL:
CREATE SCHEMA pgunit;
CREATE EXTENSION DBLINK SCHEMA pgunit;
  1. You should run the PGUnit.sql code using pgAdmin: https://github.com/adrianandrei-ca/pgunit/blob/master/PGUnit.sql.
  1. We will copy the code from GitHub:

Figure 11.10  Simple pgunit installation script
  1. A convenient way to install the simple pgunit suite in our dedicated pgunit schema is to temporarily change the search path like this:
SET search_path TO pgunit;

We then revert search_path back to the public schema after the GitHub script.

  1. Thereafter, please execute the whole of the script together in pgAdmin.
  1. The result of a simple pgunit should be as follows: 

Figure 11.11 – Completion of the simple pgunit installation

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