# Rake db:create:all **URL:** \ **Category:** Rails\ **Created:** [June 21, 2010, 8:10pm UTC](https://www.ruby-forum.com/t/rake-dball/190503 "2010-06-21T20:10:55Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![swengineer](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/97f17d/32.png) [@swengineer](https://www.ruby-forum.com/u/swengineer)\ **Post date:** [June 21, 2010, 8:10pm UTC](https://www.ruby-forum.com/t/rake-dball/190503/1 "2010-06-21T20:10:55Z")
I’m new to Ruby on Rails, and just want to ask, what do we mean when typing this command: $ rake db:create:all Thanks. ---
**Author:** ![swengineer](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/97f17d/32.png) [@swengineer](https://www.ruby-forum.com/u/swengineer)\ **Post date:** [June 21, 2010, 8:21pm UTC](https://www.ruby-forum.com/t/rake-dball/190503/2 "2010-06-21T20:21:47Z")
On 21 June 2010 19:10, Abder-rahman Ali [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > I’m new to Ruby on Rails, and just want to ask, what do we mean when > typing this command: > > $ rake db:create:all It’s pretty self-explanatory - it creates all the databases for the application (which are defined in database.yml) Not hard to discover this either: [http://www.google.co.uk/search?sourceid=chrome&ie=UTF-8&q=rake+db:create:all](http://www.google.co.uk/search?sourceid=chrome&ie=UTF-8&q=rake+db:create:all) ---
**Author:** ![swengineer](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/97f17d/32.png) [@swengineer](https://www.ruby-forum.com/u/swengineer)\ **Post date:** [June 21, 2010, 8:31pm UTC](https://www.ruby-forum.com/t/rake-dball/190503/3 "2010-06-21T20:31:04Z")
Michael P. wrote: > On 21 June 2010 19:10, Abder-rahman Ali [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > I’m new to Ruby on Rails, and just want to ask, what do we mean when > > typing this command: > > > > $ rake db:create:all > > It’s pretty self-explanatory - it creates all the databases for the > application (which are defined in database.yml) > > Not hard to discover this either: > [rake db:create:all - Google Search](http://www.google.co.uk/search?sourceid=chrome&ie=UTF-8&q=rake+db:create:all) Thanks Michael. What is mean here by “Creating” a database. Is it to be built from scratch? ---
**Author:** ![swengineer](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/97f17d/32.png) [@swengineer](https://www.ruby-forum.com/u/swengineer)\ **Post date:** [June 21, 2010, 10:10pm UTC](https://www.ruby-forum.com/t/rake-dball/190503/4 "2010-06-21T22:10:41Z")
On 21/06/2010 20:31, Abder-rahman Ali wrote: > What is mean here by “Creating” a database. Is it to be built from > scratch? For future reference, if you execute rake -T, it will show you all the rake tasks that have descriptions, together with a brief description, e.g: rake db:create:all # Create all the local databases defined in config/database.yml ---
**Author:** ![swengineer](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/97f17d/32.png) [@swengineer](https://www.ruby-forum.com/u/swengineer)\ **Post date:** [June 21, 2010, 8:39pm UTC](https://www.ruby-forum.com/t/rake-dball/190503/5 "2010-06-21T20:39:56Z")
On 21 June 2010 19:31, Abder-rahman Ali [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Michael P. wrote: > > > It’s pretty self-explanatory - it creates all the databases for the > > application (which are defined in database.yml) > > What is mean here by “Creating” a database. Is it to be built from > scratch? Assuming you have a DB engine installed (MySQL, SQLite, etc) and you’ve configured your config/database.yml file to use the DB engine, but you haven’t “created” a database in your favoured engine - the rake task will do that for you. This stuff is all covered as pretty much step 1 in any Rails tutorial you might find online, or follow in one of the books. Regards,