While working with JavaScript Isomorphic apps its important for us to plan the server code for modularity. Using Node.js for server-side coding helps to implement modules. Node.js uses Sequelize package for performing database operations for Relation database like MySQL, MS-SQL, MariaDB, Postgres etc. Sequelize is an Object Relational Mapping (ORM) package. This package provides various approaches of building Data Access Layer. In this course we will use Code-First Approach, Database First Approach for database operations. We will also use migrations to generate Database Table Schema for production.