Ruby on Rails
Firebird sample database.yml

# consult firebird docs for valid charsets.
#  examples: 
#       ISO8859_1
#       WIN1250
#       CYRL
#       UNICODE_FSS
#

common: &common
   adapter: firebird
   host: localhost
   username: sysdba
   password: masterkey
   character set: ISO8859_1

development:
   database: rails_dev
   <<: *common


production:
   database: rails_prod
   <<: *common


test:
   database: rails_test
   <<: *common