How can we use two databases to a single application?

Can we connect two database in single application?

If you can work with single database, working with multiple is no different. You will need a connection string for each database. There rest is, as they say it, history.

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

Setting up multiple database connections in one Rails app1development: adapter: postgresql. ... 2OCTO_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. ... 3Cat.first.name. ... 4class Cat < ActiveRecord::Base. ... 5Cat.first.say_meow!(User.first)Setting up multiple database connections in one Rails app

Can an application have two databases?

Multiple database technologies can be used with monolithic applications, and can even seem more natural in a microservices environment, where each service would have its own database.

How do I combine multiple databases into one?

Merge Multiple Databases into a Single Database1Create several smaller databases containing the core data tables.2Merge the smaller databases into a single larger database.3Build the schema/add the relevant constraints.Merge Multiple Databases into a Single Database - Stack Overflow

Can we use two database in one project?

Generally, if one project consumes multiple databases, it is because it must consume different, often legacy sources of information that originated outside of this particular project. This is most common in Enterprise environments.

How can I use two databases?

The tables and databases will be created under the same server.1Step 1: Create the first database and table. ... 2Step 2: Create the second database and table. ... 3Step 3: Join the tables from the different databases in SQL Server. ... 4Step 4 (optional): Drop the databases created.Join Tables from Different Databases in SQL Server - Data to Fish

Can we connect 2 database in Web application?

Yes. Give it a go. "Is it possible to connect multiple database with one application." Yes. Very straightforward - two connection strings, two different connections.