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In the introductory tutorials, it talks about MySQL, Postgre and Sqlite3. Is anything else supported out-of-the-box? Are there any plugins to support other databases?

I'm mainly interested in NoSQL - Cassandra, CouchDB, etc.

Thanks

John Topley
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Honza Pokorny
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4 Answers4

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Activerecord (Rails' default ORM) supports MySQL, Postgres, and sqlite3. If you want to use a different ORM, you have many more choices.

Some links to get you started:

I don't have enough experience with Cassandra to mention anything for it. This frontier has not been fully explored.

The game is likely to change some when Rails 3 comes out soon. Expect a lot of choices in this area to sprout up.

x1a4
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Take a look here and here and this last one(for couch). Also - if you're using JRuby - you can use any database that has a JDBC driver - which is just about every database around there.

Community
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Bozhidar Batsov
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Ruby on Rails 3 ( still in beta ) is ORM agnostic. So You can change your ORM. Or even you can not use ORM.

So the limitation is in Ruby, not in Ruby on Rails. in futur.

The ActiveModel gem help you with several librarie for compatibility. So you can even made you backend in File or with your own database.

shingara
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Here we can see on the source code the list of available DBs: https://github.com/rails/rails/tree/b002141b1ba2eef5d192ec31bec5340f7ecca5e9/activerecord/lib/active_record/connection_adapters which as shqdowbq mentions is PostgreSQL, MySQL and SQLite.

https://www.ruby-toolbox.com/categories/Active_Record_DB_Adapters contains a list of third party adapters for other databases, listed options include:

Related question: List of supported databases?

Ciro Santilli OurBigBook.com
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