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 and Using Sequelize Models

For our Avalon Airlines project that we introduced in the previous chapter, we will need to instruct our application on how we want to define our database’s schematics. A database can have various roles and applications but only a single purpose, and that purpose is to organize our data (storage is the filesystem’s job). Before we can begin defining our models within the Node.js application, we need to think about the entities of our business logic and models from a project’s perspective (and each project will have different requirements). Most projects will structure their schema in a way that categorizes organizations (for example, customers, employees, vendors, and companies) and things such as products, planes, and receipts from transactions.

Object-relational mapping (ORM) helps us ensure that the database is organized from the data and team’s perspective. Sequelize will help us manage the nomenclature for...