Book Image

Supercharging Node.js Applications with Sequelize

By : Daniel Durante
4 (1)
Book Image

Supercharging Node.js Applications with Sequelize

4 (1)
By: Daniel Durante

Overview of this book

Continuous changes in business requirements can make it difficult for programmers to organize business logic into database models, which turns out to be an expensive operation as changes to the database may result in errors and incongruity within applications. Supercharging Node.js Applications with Sequelize helps you get to grips with Sequelize, a reliable ORM that enables you to alleviate these issues in your database and applications. With Sequelize, you'll no longer need to store information in flat files or memory. This book takes a hands-on approach to implementation and associated methodologies for your database that will have you up and running in no time. You'll learn how to configure Sequelize for your Node.js application properly, develop a better sense of understanding of how this ORM works, and find out how to manage your database from Node.js using Sequelize. Finally, you'll be able to use Sequelize as the database driver for building your application from scratch. By the end of this Node.js book, you'll be able to configure, build, store, retrieve, validate, and associate your data from a database to a Node.js application.
Table of Contents (16 chapters)
1
Part 1 – Installation, Configuration, and the Basics
4
Part 2 – Validating, Customizing, and Associating Your Data
10
Part 3 – Advanced Queries, Using Adapters, and Logging Queries

Defining models for a database

In this section, we will go over a brief overview of our project’s requirements and establish which kinds of models we need to define. After that, we will run a script generator command from the Sequelize command-line interface (CLI) tool and inspect the basic structure of a model’s definition.

For Avalon Airlines, we will begin modeling with the following organizations and things:

  • Airplanes
  • Customers
  • Flight schedules
  • Boarding tickets

Each model will have its own table within the database. We will eventually associate these models or tables with columns, indices, validation, and relations to other models. For now, we will define, select (or query), insert, update, and delete data from these tables using Sequelize within our Node.js application. If you are working on a pre-existing project that already has a database, the Manipulating and querying data using Sequelize section will pertain to you more than to...