Example Redmine database.yml configuration for FirebirdSQL database (https://github.com/svoboda-jan/redmine/tree/firebirdsql)

database.yml

production:
  adapter: fb
  database: ~/Documents/redmine/db/redmine.fdb
  username: SYSDBA
  password: masterkey
  host: localhost
  encoding: UTF-8
  create: true

development:
  adapter: fb
  database: ~/Documents/redmine/db/redmine_dev.fdb
  username: SYSDBA
  password: masterkey
  host: localhost
  encoding: UTF-8
  create: true

# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
  adapter: fb
  database: ~/Documents/redmine/db/redmine_test.fdb
  username: SYSDBA
  password: masterkey
  host: localhost
  encoding: UTF-8
  create: true