How to load multiple schemas into a Rails engine or app?

How to load multiple schemas into a Rails engine or app?

ruby-on-rails sqlite gem rake rails-engines

sqlite

Rails : Rake Test:functionals cannot access DB (Sqlite3 on winXP)

ruby-on-rails windows sqlite rubygems rake

sqlite

$rake db:migrate An error has occurred, this and all later migrations canceled

ruby-on-rails windows sqlite rake

sqlite

Problem migrating w/ sqlite3, receive error message-> undefined method `prerequisites' for nil:NilClass

sqlite rake

sqlite

bundle exec rake test:models throws Errno::EACCES: Permission denied

ruby-on-rails sqlite rake

sqlite

Can't rake db:migrate due to sqlite3_busy timeout

sqlite ruby-on-rails-3 rake

sqlite