How can we use two databases to a single Rails application?

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Setting up multiple database connections in one Rails app development: adapter: postgresql. . OCTO_DB = YAML.load_file(File.join( Rails.root, "config", "octo_database.yml"))[ Rails.env.to_s] Rails now knows to load the new db config. . Cat.first.name. . class Cat < ActiveRecord::Base. . Cat.first.say_meow!(User.first)

Can rails connect to multiple databases?

Rails now has support for multiple databases so you don't have to store your data all in one place. At this time the following features are supported: Multiple writer databases and a replica for each. Automatic connection switching for the model you're working with.

Can we connect 2 database in Web application?

Yes it is possible. But you need to be extra careful while writing the data tovthe database from the app.

Can I use 2 databases?

You can use two databases the same reason most banks have two ATMs, for reliability. You can swap one in if the other fails, but to do it quickly requires setup, such as a cname and controlling your own DNS server.

How does rails connect to database?

Connecting MySQL with Ruby on Rails1Step 1: Install MySQL in the System. ... 2Step2: Create a Database in the Local. ... 3Step3: Create a New Rails App using Mysql. ... 4Step4: Change the Database.yml with your Mysql Database Name that we Created Earlier.Connecting MySQL with Ruby on Rails | Web app development | Blog

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