Node.js

This succinct, example-based article will show you some different ways to execute sub-queries with Sequelize.js in Node.js. Solution 1: Raw Sub Query Directly inserting a raw sub-query string into the Sequelize query method allows......

Introduction Transitioning between databases ORMs can be a nuanced task fraught with complexities. Sequelize, often used with SQL databases, and Mongoose, designed for MongoDB, serve different ecosystems. This tutorial wilmogr guide......

SQL injection is a common web security vulnerability that can allow an attacker to meddle with the queries that an application makes to its database. Understanding how to safeguard your application from SQL injections is crucial, which is......

Introduction Sequelize is a promise-based Node.js ORM that supports various dialects of SQL databases. Not only can it connect to a single database, but it also provides the facility to connect to multiple databases, which is a common......

Overview Sequelize is a popular Node.js ORM (Object-Relational Mapping) library that makes it easy to work with relational databases such as MySQL, SQLite, PostgreSQL, and MSSQL. It provides a high-level abstraction for performing......

Overview Eager loading is a concept in the context of object-relational mapping (ORM) that refers to the practice of retrieving related data of an entity from the database in a single query, as opposed to lazy loading, where the......

Introduction One of the core features of Sequelize.js, a promise-based Node.js ORM (Object-Relational Mapping) library, is model validation. Validation in Sequelize allows developers to ensure that the data being saved to the database......

Overview Migrations are an essential part of modern database management in web development, allowing developers to track and share changes to the database schema. Sequelize.js, a popular ORM for Node.js, comes with robust support for......

Introduction Sequelize.js is a popular promise-based Node.js ORM (Object-Relational Mapping) that supports the SQL dialect for many databases such as PostgreSQL, MySQL, SQLite, and MSSQL. One of the tasks you’ll often need to perform......

Overview Using Sequelize.js, developers can comfortably interact with databases through an ORM lens. One common need is to query records that meet certain threshold criteria, such as finding all users who have logged in a certain......

Overview In modern web development, ensuring that your data is safely backed up and can be easily restored is paramount. This guide will focus on how to backup and restore a database using Sequelize.js, a popular JavaScript ORM for......

Overview Sequelize is a promise-based Node.js ORM for Postgres, MySQL, MariaDB, SQLite, and Microsoft SQL Server. It features solid transaction support, relations, eager and lazy loading, read replication, and more. RIGHT JOIN is a......