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

Making the atmapp modifiable inside the admin

We need to tell the admin that the ATMlocations objects have an admin interface:

  1. To do this, open the atmapp/admin.py file and edit it to look like the following code block:
[root@ip-172-31-95-213 atmproject]# vi atmapp/admin.py
------------------------------------------
from django.contrib import admin
# Register your models here.
from .models import ATMlocations
admin.site.register(ATMlocations)
------------------------------------------
  1. Then, we can launch the Django server with the help of the following command:
(venv) [root@ip-172-31-95-213 atmproject]# python3.7 manage.py runserver 0:8000
  1. After that, we will log in as the admin at http://ec2-3-209-184-46.compute-1.amazonaws.com:8000/admin. Using the admin and djangoapp login credentials, we will be able to view our captured ATM locations data from the PostgreSQL RDS, as shown in the following screenshot:

Figure 4.18 – Registering the database...