INSERT INTO restaurants(name, location, price_range) VALUES ('Iya Toyosi Canteen', 'Sagamu', 3) Set environment variablesĬhange directory into the server folder and create a. create database yelp \c yelpĬreate restaurants table CREATE TABLE restaurants ( id BIGSERIAL NOT NULL PRIMARY KEY, name VARCHAR(50) NOT NULL, location VARCHAR(50) NOT NULL, price_range INT NOT NULL check( price_range >= 1 AND price_range = 1 AND rating <= 5 ) ) Open your terminal and login into Postgres psql -U postgresĬreate a database named yelp and connect to it.
Since we are using PostgreSQL for the database, make sure you have it installed. Change directory to the client and install dependencies cd client npm install Create database Let’s make sure the app is running well locally.Ĭhange directory to the server and install the dependencies cd server npm install server - which has the backend developed using Express.js.client - which contains the front-end code built with React.js, and.React.js serves as the frontend, and Node.js serves as the backend server. With the Express.js framework, PostgreSQL is used as a backend database. The PERN stack consists of PostgreSQL, Express, React, and Node. This article will walk you through how to deploy a PERN full-stack app with automatic deployment. In simple terms, a database is a collection of tables that contain related data in a way that we can programmatically retrieve and alter depending on the purpose of the software we’re buildingĭatabases are used everywhere, this very website right now medium.Deploy a Postgres, Express, React and Nodejs Fullstack App on Heroku and Netlify Where databases are more complex they are often developed using formal design and modeling techniques. So in this article we’re gonna dive into SQL and databases and Postgresql in specific and we’ll cover many useful things about databases and SQL in general so let’s jump right into itĪ simple google search and from wikipedia to be exact will give you the following answerĪ database is an organized collection of data, generally stored and accessed electronically from a computer system.
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