In this tutorial you will learn to connect an Express application with Postgres using Sequelize to manage a relational database in the cloud or locally
The first thing is to install the necessary dependencies using npm install express sequelize pg pg hstore body parser and configure a connection file that uses environment variables such as DB HOST DB USER DB PASSWORD DB NAME and DB DIALECT for greater security
Next, create a Sequelize object passing the connection values and define a Task model with fields id as auto-incrementing integer type, title as string type, and completed as boolean type with default value false
Then implement the REST routes to create, list, update the completed status, and delete tasks using HTTP methods post get patch and delete respectively, and take advantage of Sequelize's create find all update and destroy methods to interact with the database
Finally, initialize the Express server listening on the desired port and sync the models with the database using sequelize sync with the alter option in development and your API will be ready to manage tasks efficiently
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