Does Ruby on Rails support DB server by itself?

Question

I am beginner of Ruby on Rails. I made first demo project and run by these commands

rails new demo
rails server

And It does work well. I haven't installed any apache or mysql server like XAMPP, but my demo project worked. Now I want to know if ruby on rails support database server by itself. If not, should I install new database server like XAMPP?

score 1 · Accepted Answer · edited May 23 '17 at 12:33

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check your config/database.yml you will see the default is using sqllite which is installed in your system that is why the system up, and you can see in your gem file that sqllite3 gem is exist which is the adapter that connect you to the database, once you changed the configuration for database.yml to use postgres for example and add the pg gem the app will fail to start as it couldn't connect to postgres as its not installed or its not up in your machine

check also this answer, it will clear a lot for you Convert a Ruby on Rails app from sqlite to MySQL?

edited May 23 '17 at 12:33

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answered Jan 26 '17 at 17:09

mohamed-ibrahim

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Thanks for your answer, and you mean ruby provide sqllite db by default? And if i want to use mysql server as db, how to do it? Then should i install mysql db server? – Nomura Nori Jan 26 '17 at 17:14
Yes, you will need to do 3 things, 1- install mysql in your machien, 2- install mysql gem, 3- change your database configuration to use mysql, – mohamed-ibrahim Jan 26 '17 at 17:40
check also http://stackoverflow.com/questions/1670154/convert-a-ruby-on-rails-app-from-sqlite-to-mysql – mohamed-ibrahim Jan 26 '17 at 17:41
ok I understand, btw, ruby provide apache server by itself, i think. And how do you think about that? – Nomura Nori Jan 26 '17 at 17:49
apache is a web server not database – mohamed-ibrahim Jan 29 '17 at 05:32

Does Ruby on Rails support DB server by itself?

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