Antonio Luiz Mangueira almangr

Migrations & Seeding

What are migrations??

Migrations are a way to make database changes or updates, like creating or dropping tables, as well as updating a table with new columns with constraints via generated scripts. We can build these scripts via the command line using knex command line tool.

To learn more about migrations, check out this article on the different types of database migrations!

Creating/Dropping Tables

Knex Setup Guide

Create your project directory

Create and initialize your a directory for your Express application.

$ mkdir node-knex-demo
$ cd node-knex-demo
$ npm init

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	<html>
	<head>
	<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
	<meta charset="UTF-8">
	<title>Drawing Tools</title>
	<script type="text/javascript"
	src="http://maps.google.com/maps/api/js?sensor=false&libraries=drawing"></script>
	<style type="text/css">
	#map, html, body {

	/* this is the "root" in "root em." */
	html {
	font-size: 62.5%; /* Now 10px = 1rem! */
	}

	body {
	font-size: 16px; /* px fallback */
	font-size: 1.6rem; /* default font-size for document */
	line-height: 1.5; /* a nice line-height */
	}