Book Image

Node.js Web Development - Fourth Edition

By : David Herron
Book Image

Node.js Web Development - Fourth Edition

By: David Herron

Overview of this book

Node.js is a server-side JavaScript platform using an event-driven, non-blocking I/O model allowing users to build fast and scalable data-intensive applications running in real time. This book gives you an excellent starting point, bringing you straight to the heart of developing web applications with Node.js. You will progress from a rudimentary knowledge of JavaScript and server-side development to being able to create, maintain, deploy and test your own Node.js application.You will understand the importance of transitioning to functions that return Promise objects, and the difference between fs, fs/promises and fs-extra. With this book you'll learn how to use the HTTP Server and Client objects, data storage with both SQL and MongoDB databases, real-time applications with Socket.IO, mobile-first theming with Bootstrap, microservice deployment with Docker, authenticating against third-party services using OAuth, and use some well known tools to beef up security of Express 4.16 applications.
Table of Contents (19 chapters)
Title Page
Dedication
Packt Upsell
Contributors
Preface
Index

Storing notes in SQL with SQLite3


To get started with more normal databases, let's see how to use SQL from Node.js. First, we'll use SQLite3, a lightweight, simple-to-set-up database engine eminently suitable for many applications.

Note

To learn about that database engine, visit http://www.sqlite.org/. To learn about the Node.js module, visit https://github.com/mapbox/node-sqlite3/wiki/API or https://www.npmjs.com/package/sqlite3.

The primary advantage of SQLite3 is that it doesn't require a server; it is a self-contained, no-set-up-required SQL database.

The first step is to install the module:

$ npm install [email protected] --save

SQLite3 database schema

Next, we need to make sure that our database is configured. We're using this SQL table definition for the schema (save this as models/schema-sqlite3.sql):

CREATE TABLE IF NOT EXISTS notes (
    notekey VARCHAR(255),
    title VARCHAR(255),
    body TEXT
);

How do we initialize this schema before writing some code? One way is to ensure that the sqlite3...